Does Scent Marketing Actually Work? The Evidence

Yes — but modestly and conditionally. More than 30 years of peer-reviewed research, including two large meta-analyses, show that a pleasant ambient scent reliably improves shoppers' mood, how they judge a store and its products, how long they stay, and how much they spend. The average effect is small to moderate, and it is strongest when the scent is pleasant, familiar, and congruent with what is being sold.

The short answer

Scent marketing works — the effect is real, repeatedly measured, and positive — but it is a moderate lever, not magic. The right scent makes a space more pleasant, keeps people in it a little longer, and nudges spending up. The wrong scent, or one that doesn't fit the brand, does little or can even hurt. So the honest answer for an owner is: yes, it works, and it's worth doing, as long as you match the scent well and measure the result rather than trusting a headline statistic.

What the research actually shows

Three pieces of evidence matter most, because they pool many studies rather than relying on one:

• The foundational experiment. Spangenberg, Crowley and Henderson (1996, Journal of Marketing) compared a scented and an unscented version of the same store and found shoppers rated the scented store more positively and behaved more favourably in it.
• The Journal of Retailing meta-analysis. Roschk, Loureiro and Breitsohl (2017) pooled about 66 studies on music, scent and colour. Environments with a pleasant scent produced higher pleasure, satisfaction and behavioural-intention ratings than unscented ones — with effects ranging from small to medium, and a tendency to be stronger in service settings (like cafés) than in plain retail.
• The 2020 meta-analysis. Roschk and Hosseinpour (2020, Journal of Marketing) integrated 671 individual effects from 64 studies. They found pleasant ambient scent reliably increases customer responses — emotions, evaluations, behaviour and spending — and that the gains are largest when the scent is pleasant, familiar, and congruent with the products on sale.

The pattern across all three is consistent: a real, positive, repeatable effect, with congruence as the deciding factor.

How big is the effect, really?

This is where honesty matters. The 2020 meta-analysis put the average lift in customer responses in the region of a few to around fifteen percent, with spending up a few percent on average. Individual studies of a well-matched scent report bigger numbers, and you'll often see eye-catching figures online — a coffee aroma lifting purchase intent, or a single petrol-station test multiplying coffee sales. Those are best-case single results, not averages, so they're useful as proof the mechanism can be powerful, but a poor basis for what your shop should expect.

The sensible planning assumption: a pleasant, well-matched scent gives a reliable single-digit to low-double-digit lift in the right conditions — small enough that you should measure it, large enough that at a few dollars a day it pays for itself easily.

Why scent works at all

Smell is the only sense wired almost directly into the brain's limbic system — the seat of emotion and memory — rather than being routed first through the rational, evaluative parts of the brain. That's why a scent can trigger a mood or a memory before you've consciously noticed it, and why a pleasant ambient scent quietly makes a space feel more welcoming. It's also why scent is unusually good at building brand recall: the smell becomes attached to the memory of the place.

When scent marketing fails

The research is just as clear about what doesn't work, which is the part hype tends to skip:

• Incongruent scent. A smell that doesn't fit the product or brand adds little. Congruence is the single biggest moderator in the meta-analyses.
• Unpleasant or overpowering scent. Too strong, too cheap, or simply disliked, and the effect reverses — it drives people away.
• Complex, muddy blends. Simple, clear "aroma structures" tend to outperform complicated ones.

In short, the lever works, but only when pulled carefully — which is exactly why matching and tuning the scent is the job, not just switching on a diffuser.

Does it work for cold F&B?

It's arguably where scent has the most to add. The research is about ambient scent diffused into a space — not the smell of the product itself. Hot food already perfumes the air, so a bakery or coffee roaster gets that pull for free. Cold drinks and desserts give off almost no aroma, so a bubble tea shop or gelato café has no natural scent cue at all. A diffused, congruent signature scent supplies the missing ingredient — which is why this is the gap Scentura focuses on. See our guides on scent marketing for bubble tea shops and scent marketing for cafés.

How to prove it for your own shop

Because the effect is real but moderate and context-dependent, the only number that should decide it is yours. That's how Scentura runs it: a free two-week pilot that compares your takings on scented days against your normal days, with a scent matched to your hero product. You don't take the research on faith — you watch it work, or not, on your own till.