huh. the gym bit is interesting -- i wonder what could cause that, since it's mostly the same type of exertion as physical labour. stale sweat on people and in clothes, that smells not so good to me. also, certain body parts when unwashed for a while smell extra unpleasant -- the groin area is one of those. but normal body odour (a range that includes fresh sweat) smells much better to me than most hygiene products.

i can smell certain physical conditions about people -- ketosis is a pretty obvious one (all those people on atkins' induction phase smell distinctly different to me, *heh*). i don't know, of course, what most of the smells are -- it's not like i'd be quite uncouth enough to walk up to somebody and inquire, even though, dammit, i want to. :) what i do know i learned from friends, and when working in hospitals, but in general there it's rather harder to tell individual smells because of the overpowering "hospital smells".