Outdoor advertising has looked the same for decades: oversized visuals, bold logos, and big promises plastered across every cityscape. In a world dominated by visual noise, sensory marketing — the use of smell, sound, and touch to influence consumer behavior — offers a radically different approach. We’ve become so saturated with visual messaging that most of us have developed what researchers call ad blindness — billboards are physically present, yet mentally invisible.
By Piret Ilver, Shopping Scientist & Consumer Behavior Researcher
In 2024, McDonald’s Netherlands decided to test a radical hypothesis: what if the most powerful advertisement isn’t something you see or hear, but something you smell? Their “Smells Like McDonald’s” campaign became one of the most talked-about scent marketing (also known as aroma marketing or olfactory marketing) experiments in recent history — and the results were remarkable.
What Is Sensory Marketing? The Science Behind Smell Selling
Sensory marketing is a strategy that engages consumers’ senses — sight, sound, smell, taste, and touch — to create emotional connections with a brand. While most marketing focuses on what you see and hear, research shows that smell marketing may be the most powerful sensory channel of all. The olfactory system is the only sense directly connected to the brain’s limbic system, which controls memory and emotion.
This is why a particular fragrance can instantly transport you back to a childhood memory. Brands that understand this connection use sensory branding to create distinctive, memorable experiences. The global scent marketing industry has grown into a multi-billion dollar market, with companies like ScentAir, Prolitec, and Air Aroma providing aroma marketing solutions for retailers, hotels, and restaurants worldwide.
McDonald’s “Smells Like McDonald’s” campaign represents perhaps the boldest experiment in olfactory marketing to date — using scent not as a background enhancer, but as the primary advertising medium.
The Campaign: Billboards You Could Smell
At the heart of the campaign were completely blank billboards painted in McDonald’s signature red and yellow brand colors. No logo. No text. No photographs of burgers. Nothing that would traditionally identify what was being advertised. Every element of communication was stripped away — except scent.
Hidden behind these minimalist panels were ventilation systems and specialized scent dispensers that periodically released the unmistakable aroma of McDonald’s french fries and Big Macs into the surrounding air. It was a classic “drive traffic to the store” campaign, except without the arrows and directions — the smell itself did the work.
Crucially, the billboards were placed exclusively near McDonald’s restaurants in Utrecht and Leiden. When a passerby caught the scent, the nearest McDonald’s was just a few minutes’ walk away. The scent marketing approach transformed a sensory cue into an immediate purchase opportunity.
The Scent Marketing Strategy: How Olfactory Marketing Meets Branding
The strategy was deceptively simple yet boldly ambitious: can scent alone trigger a purchase decision?
At the core of this scent marketing approach was the idea that smell is a brand asset. McDonald’s didn’t need to build a new narrative from scratch — they leveraged an existing sensory asset that billions of people already recognized. Decades of consistently delivering the same flavors and aromas had created a powerful memory signal that people didn’t even need to consciously process. You smell the fries, and somewhere in your brain, you know McDonald’s is nearby.
The biology behind this is well-documented. The human sense of smell is directly connected to the brain regions responsible for emotions and memory — the amygdala and hippocampus. Unlike visual or auditory information, which is processed through the thalamus first, olfactory signals take a direct route to these emotional centers. This campaign worked precisely at that level: first the scent, then the memory, then the craving, then the walk to the restaurant. The ad didn’t explain anything — it triggered an automatic behavioral response.
Results: Scent Marketing That Delivered Measurable ROI
This was a deliberate contrast to how outdoor advertising typically works. Zero messaging. The brand had to survive purely through sensory recognition, not through taglines or slogans.
And the measurable impact was significant:
Sales Impact
McDonald’s restaurants near the scented billboards saw a 14% increase in sales during the campaign period. For an outdoor media campaign — especially one that wasn’t promoting a new product but simply reinforcing brand presence — this is an exceptionally strong result.
Brand Recognition Through Scent
- 89% of street survey respondents recognized the scent
- 71% could specifically identify it as the smell of french fries
This means McDonald’s olfactory “signature” lives in people’s minds with the same strength as their visual logo — a powerful demonstration of what consistent scent marketing can achieve over time.
Earned Media Value
The campaign generated approximately €49.9 million in earned media value. The story of scented billboards and “empty” posters was picked up by marketing publications and mainstream media alike. The scent wasn’t just a nice addition to the campaign — it was a direct call-to-action that translated into measurable revenue.
The Criticism
As with any bold idea, the campaign faced its share of criticism. Some argued it was “too gimmicky” — why hide the brand when the logo has been built up over decades? Others pointed out that this type of scent marketing approach only works for brands with extremely strong global recognition; smaller brands couldn’t simply copy the playbook because nobody would recognize their scent.
There was also debate around measurement: did the 14% sales increase come purely from the scent, or did the massive media coverage and McDonald’s general brand strength in the Netherlands play a role?
The criticism can be fairly summarized as this: it was a brilliant execution tailored specifically for McDonald’s. The same logic cannot be blindly replicated for every brand.
Other Scent Marketing Examples: Who Else Uses Smell to Sell?
McDonald’s is far from the only brand leveraging scent marketing. Here are notable scent marketing examples from other industries that demonstrate the breadth of this strategy:
Singapore Airlines developed a custom fragrance called “Stefan Floridian Waters” that is woven into hot towels, sprayed in cabins, and worn by flight attendants. The scent has become so iconic that passengers associate it with luxury air travel — a masterclass in sensory branding.
Cinnabon strategically places its ovens near the front of stores and uses weaker hoods to let the cinnamon aroma waft into mall corridors. This aroma marketing approach is deliberately designed to draw foot traffic — and it works. Their locations in airports and malls consistently outperform expectations.
Abercrombie & Fitch was a pioneer of retail scent marketing, pumping its signature “Fierce” cologne through ventilation systems at concentrations so high that the scent lingered on clothes long after leaving the store. While controversial (and later toned down), the approach demonstrated how powerfully scent can define brand identity.
Hyatt Hotels uses a proprietary “Seamless” scent across its lobbies to create a feeling of calm sophistication. Studies by the brand showed that guests who noticed the ambient scent rated their stay more favorably, demonstrating the subtle power of smell marketing in hospitality.
Key Takeaways for Marketers
This scent marketing case study leaves marketers with several concrete lessons:
Scent is a brand asset, not just a pleasant bonus. If your product has a consistent, recognizable smell, it can become as powerful a brand element as your logo or packaging. McDonald’s proved that decades of scent consistency can eventually replace visual branding entirely.
Sensory marketing doesn’t require complex technology. McDonald’s used a simple mechanical solution — fans and scent dispensers — paired with strategic placement. The power came from the concept, not from expensive tech.
Minimalism cuts through visual clutter. In a cityscape screaming with visual ads, a blank billboard that activates a different sense entirely can be far more impactful than yet another eye-catching design.
Brand consistency pays off in the long run. When you maintain the same taste, the same aroma, and the same experience for decades, you eventually reach a point where you can run a campaign without your logo at all. The brand already lives in people’s sensory memory.
The numbers speak for themselves. When a sensory approach drives a 14% sales increase and generates nearly €50 million in earned media, it’s not just a creative experiment — it’s a clear business case for scent marketing.
Retail Scent Marketing: Applying McDonald’s Lessons to Your Business
You don’t need McDonald’s budget to apply retail scent marketing principles to your business. The core insight from this campaign isn’t about expensive billboard installations — it’s about understanding that consumers make decisions emotionally before rationalizing them logically. Here’s how to adapt this scent marketing strategy at any scale:
Identify your signature scent. Every brand has sensory associations. A bakery’s fresh bread, a spa’s lavender, a leather goods store’s distinctive aroma — these aren’t accidents, they’re assets. The first step in any aroma marketing program is identifying what your brand naturally smells like, then amplifying it consistently.
Place scent at decision points. McDonald’s positioned their scented billboards within 200 meters of restaurants, catching people at the moment of decision. Similarly, your sensory marketing should focus on high-impact moments: near the entrance, at checkout, or anywhere customers pause to consider their next action.
Measure the impact. Track footfall, dwell time, and sales before and after introducing scent elements. McDonald’s didn’t just hope the campaign worked — they measured a specific 14% sales increase near scented locations. Without measurement, you’re just burning essential oils.
The Shopping Scientist’s Take
By Piret Ilver, Shopping Scientist
This is one of my favorite case studies because it demonstrates something I talk about constantly: the most powerful purchase triggers often bypass conscious thought entirely.
We like to think we make rational decisions when shopping. We compare prices, read reviews, weigh options. But the truth is, a huge portion of our purchase behavior is driven by sensory cues we barely notice. The smell of fresh bread in a supermarket. The sound of a coffee machine. The texture of a product’s packaging. These aren’t random — they’re carefully (or sometimes accidentally) engineered triggers that speak directly to our emotional brain.
What McDonald’s did brilliantly was isolate one sensory channel and prove it could work entirely on its own. Most scent marketing happens in-store, where it’s just one element among many. By removing every other cue — no logo, no text, no image — they created a controlled experiment that proved smell alone can drive foot traffic and sales.
For smaller brands, the lesson isn’t to copy this exact tactic. It’s to ask: what sensory signature does my brand own? And if the answer is “none” — that’s a gap worth closing. Scent, sound, texture — these are the brand assets that competitors can’t easily replicate with a bigger ad budget. They take years to build, but once established, they become your most defensible competitive advantage.
Frequently Asked Questions
What is scent marketing?
Scent marketing is a form of sensory marketing that uses specific fragrances or aromas to influence consumer behavior, create brand associations, and enhance the customer experience. It leverages the direct connection between the olfactory system and the brain’s emotional and memory centers to trigger responses that visual or auditory advertising cannot achieve on its own.
How did McDonald’s use scent marketing in their campaign?
McDonald’s Netherlands placed minimalist billboards in their brand colors near restaurants in Utrecht and Leiden. These billboards contained hidden ventilation systems that dispersed the scent of french fries and Big Macs. With no logos, text, or images, the campaign relied entirely on smell to draw people to nearby McDonald’s locations.
Does scent marketing actually increase sales?
Yes. In McDonald’s case, restaurants near the scented billboards saw a 14% sales increase during the campaign. Research consistently shows that pleasant, brand-appropriate scents can increase dwell time, improve brand perception, and drive purchase behavior. The key is using scents that authentically connect to the brand rather than generic pleasant fragrances.
Can small businesses use scent marketing effectively?
Absolutely. While small businesses can’t replicate McDonald’s specific approach (which relied on decades of global brand recognition), they can develop their own scent signatures. Bakeries, coffee shops, hotels, and retail stores frequently use signature scents to create memorable experiences and encourage repeat visits. The key is consistency — using the same scent across all customer touchpoints over time.
Why is smell more powerful than other senses for marketing?
Smell is uniquely powerful because olfactory signals bypass the thalamus and connect directly to the amygdala and hippocampus — the brain regions responsible for emotion and memory. This means scents can trigger emotional responses and memories faster and more intensely than visual or auditory stimuli. A single smell can instantly transport someone back to a specific place, moment, or feeling.
What are some examples of scent marketing by brands?
Several major brands use scent marketing effectively. Singapore Airlines has its signature “Stefan Floridian Waters” fragrance in cabins and hot towels. Cinnabon strategically lets its cinnamon aroma drift into mall corridors to attract foot traffic. Abercrombie & Fitch pumped its “Fierce” cologne through ventilation systems. Hyatt Hotels uses a proprietary “Seamless” scent in its lobbies. These aroma marketing programs show how scent can build brand recognition across hospitality, retail, and food service.
What is sensory marketing and how does it differ from traditional marketing?
Sensory marketing engages multiple senses — sight, sound, smell, taste, and touch — to create deeper emotional connections between consumers and brands. Unlike traditional marketing that relies primarily on visual and verbal messaging, sensory marketing works on a subconscious level. Research shows that olfactory (smell) marketing is particularly powerful because scent is the only sense directly connected to the brain’s limbic system, which processes emotion and memory. This makes smell marketing up to 100 times more likely to trigger a memory than visual or auditory stimuli.
How much does scent marketing cost for a business?
Scent marketing costs vary widely depending on scale. Small retail scent marketing solutions start at $50-100 per month for a basic diffuser system with fragrance refills. Mid-range commercial systems from providers like ScentAir or Prolitec range from $200-500 per month per location. Enterprise-level custom fragrance development — like creating a signature brand scent — can cost $10,000-50,000 upfront. The ROI, however, can be significant: studies consistently show that ambient scent increases dwell time by 15-20% and can boost sales by 10-15% on average.
