I also have a smell fetish, so I know how you feel. I will not allow it to be treated as a pervert. (Sweat)
Smell represents a person's life. It shows what kind of house he lives in, what kind of food he eats, what kind of people he associates with, and what kind of life he lives. It is the odor emitted by the bacteria and viruses that the person and the house have by eating the secretions from the body surface. associated with intestinal bacteria. It is also related to recent viruses in the mouth. Morning showers and baths will remove it to some extent, but not completely. If it is completely gone, the person will probably die.
I used to move house a long time ago. Every time she moved, and every time she changed, I caught a cold. This is probably due to the lack of immunity to new bacteria and viruses.
I think that she and her family, who didn't catch a cold even when we were dating, probably get along well with me.
But most of the time, I get over my cold, and after that I go out with that girl and live in that house without getting sick for a while. Immunity is possible.