. My armpits smell like onions. Sucks! Even if take a bath daily, especially when I sweat a lot, oh my God, I hold my breath sometimes not to smell my armpit. I do not know what is causing this smell. When I shave my armpit, the strong odor comes out if I sweat. They said, I just have to drink a lot of water, apply some lemon. Ya, of course hydration. The lemon works though, but I can't remember to put them most of the time. But I'm just wondering why do some people who have underarm odor pretends as if they didn't smell that infact they smell like rotten fruit. If I myself knows that I'm smelling and I'm very uncomfortable with it specially when I'm dressed up and with my friends. It's so embarrassing really! How can I get rid of this rusty smell I do not know.