I have an incredible olfactory memory, and I’m also triggered sexually by smells (but not strong ones, like sweat, and not so actively as you.)

The inconvenience of my memory is having a stranger passing by me and if he smells like any lover I had, (aftershave or perfume) — I feel immediately attracted to him!

Otherwise, in sex, like you, I snif my lovers, there’s a “skinprint”, each person emanates a particular smell, that makes them so unique. and then I save the scent in my memory archive.