Short answer: There is no solid evidence that a scent shortens waiting by a specific percentage. What is well established is that perceived time depends on attention and mood, and that a pleasant, coherent environment improves how people rate a space. The exact figures circulating online almost never have a source you can trace.
How the brain perceives the passing of time
We do not have a sense of time the way we have sight or hearing. The brain estimates duration from what happens and how much attention we pay to it. Two ideas come out of this that psychology has studied for decades and that are well established.
- While you wait, the more you watch the clock, the longer it feels. Attention models, such as the "attentional gate" proposed by psychologists Dan Zakay and Richard Block, explain that when attention is directed at the passing of time itself, duration is perceived as longer. If something distracts you, it feels shorter.
- Looking back, what happened counts. When you judge a stretch of time afterwards, a period full of events tends to be remembered as longer than an empty one. That is why an entertaining afternoon "flies" at the time and later seems to have lasted a while.
- Emotion matters. Boredom, discomfort and anxiety make waiting feel worse and seem longer.
None of this needs scent to hold up. It is the base on which claims about smells are later built, sometimes with too much enthusiasm.
The role of smell
Smell has two features that make it interesting here. The first is its connection with brain areas linked to emotion and memory: much of the olfactory signal reaches them without passing through the thalamus first, unlike sight or hearing. That is why a smell can change your mood or bring back a memory before you identify it.
The second is adaptation. Faced with a constant smell, we stop perceiving it consciously quite quickly. That means scent works mainly on arrival and when something changes, not consciously throughout the whole visit. We go into this in how smell works and which figures about it are false.
What studies say about scent in shops and service spaces
There has been a line of research in sensory marketing since the nineties. Two widely cited papers help show where things stand:
- Spangenberg, Crowley and Henderson (Journal of Marketing, 1996). They compared a store environment with and without scent. In the scented condition, people rated the store and the products more favourably. It is one of the reference studies in the field.
- Mattila and Wirtz (Journal of Retailing, 2001). They studied music and scent together. The most quoted conclusion is that they work better when they match: a relaxing scent with calm music, a stimulating one with upbeat music.
Many more experiments have followed, along with reviews that group them together. The overall picture is that environmental effects exist, but they vary and depend heavily on context: the type of business, whether the scent fits, the intensity and the person.
On time perception specifically there is less work, with small samples and results that do not always agree. Some find that with a pleasant scent the wait is estimated as shorter; others find no difference. That is not enough to support a figure.
Proven, likely and exaggerated
| Claim | What is behind it | Verdict |
|---|---|---|
| Perceived time depends on attention and mood | Decades of experimental psychology | Well established |
| A bad smell makes the experience of a venue worse | Consistent with research and with anyone's own experience | Well established |
| A pleasant, coherent scent improves how a space is rated | Several experiments in retail settings | Likely, depends on context |
| Scent makes the wait feel shorter | Few studies and mixed results | Possible, not guaranteed |
| "Scent cuts perceived waiting" or "raises sales" by an exact percentage | Figures copied from blog to blog with no source | Be wary |
| "Such and such university proved lavender shortens waits" | References that lead to no study | Be wary |
| There is one scent that works the same in any business | Contradicts what is known about congruence | False |
Why a study does not transfer directly to your premises
- Lab conditions. Many experiments use students, simulated shops and short periods.
- Congruence. The same scent that improves a homeware shop may be out of place in a clinic.
- Intensity. If the customer thinks "it smells strong in here", the effect goes into reverse.
- Background smell. Adding scent on top of a bad smell makes it worse. Neutralise first, then add scent. We explain how on our odour neutralisation page.
The practical conclusion is that the only figure that counts is your own. In a shop you can measure it with a simple test of weeks with and without scent, which we explain step by step in scent in shops: how to measure whether it sells.
What to do with all this in a business
- Get rid of what smells bad. It has the biggest impact and it is the only thing that is one hundred per cent clear.
- Choose a scent that fits the space and what the customer expects. There are criteria in how to choose a scent for your business.
- Low, steady intensity, with a diffuser programmed to your opening hours.
- Use it where people wait: receptions, practices, hair salons. The practical guide, with scents, intensity and placement, is in scent for waiting rooms.
- If you sell, measure. Do not trust other people's percentages, ours included.
If you want to try it without buying a unit, the monthly scenting fee ranges from €29.90 to €94.90 + VAT per month depending on the unit, with fragrance included and no minimum term.
Frequently asked questions
Is it true that scents make time go faster?
Put like that, it is an exaggeration. What is known is that perceived time depends on attention and mood, and that a pleasant environment makes waiting easier to bear. That a particular scent reliably shortens the wait has not been shown.
Which scent makes the wait feel shorter?
No scent has that effect guaranteed. In waiting rooms, clean and discreet scents such as Green Tea or Orange Blossom tend to work, because they do not bother anyone and make the space more pleasant.
Why are there so many figures about scent that cannot be checked?
Because they get copied from one blog to another until they look official. When a figure has no author, journal and year, treat it as advertising, whoever it comes from.
Do scents have therapeutic effects?
Our fragrances are perfumery fragrances, formulated for cold air nebulisation, and they have no therapeutic effect. An essential oil is an aromatic extract obtained from a plant, but that does not turn a smell into a treatment either.
How do I know if scent works in my business?
By measuring it. In a shop you can alternate weeks with and without scent and compare transactions and time in store. In a waiting room, ask customers and check what reviews say about the atmosphere.
