Why scent is remembered and music is only heard

Of the five senses, smell is the only one that reaches the limbic system directly, without an intermediate relay. That is why a scent can return a childhood memory in a fraction of a second. Scent memory also fades more slowly: the visual details of a day are gone within weeks, while the smell of that same day is still recognised years later.

For commercial spaces this has a very concrete consequence. Someone who has been to you once will not reconstruct your window display from memory, but will know the air at the door. That recognition is not learned consciously, and so it is not forgotten consciously either.

This is why hotel groups invest years in building a scent signature of their own. The work is done by repetition: every further visit settles on top of the last and makes the trace denser. One change of composition resets what has accumulated and the counting starts again.

The practical conclusion: choose one composition and keep it. Olfactory identity is built through repetition. Changing the scent makes sense once a season.