thank you Koffee, for your detailed answer.

It is hard to explain, but I don't smell that smell in my sweat (like if I sniffed my arm), so much, but rather in my nose. sounds silly?

Do you think asthma has anything to do with it? My asthma has not been controlled very well since my last sinus infection and I had a flare up that same ride that prompted me to post this question.