I work in a place that is primarily women. I can be walking down a hallway, usually deep in thought but still with excellent form and posture, and pass numerous women and get "the sniff" from most of them. I don't usually wear cologne at work and 95% of the time I'm wearing scrubs. Best I can figure it's a subconscious IOI, but I could be waay off base.

If you have no idea what I mean by "the sniff", imagine when you have a slight cold or a small boogie in your nose and you do a quick, light breathe in through your nose.