Smell is certainly an interesting sense. It is the one that has such a visceral link to one’s memory. A single scent can really transport you to the last time you smelled it, or a flavour you like, or even entice a certain emotion. From this subjective view of the sense of smell, I’d like to promote this company;
https://experimentalperfumeclub.com/shop-fragrances/
There is definitely a scope for tailored perfume making.
In the brain the part which links to the sense of smell is called the olfactory bulb. The nose (where you grasp the scent) is directly underneath & linked to the brain. So the sense of smell can really evoke emotions in you.