Its called deodorant and it goes under your fucking arms!!! Or take a frigging shower!!!
Dude, are you talking about people who smell when they work out or after? I mean, some people, like myself, just sweat a lot when pumping iron. But I always take a shower right after lifting. Also if you shower as often as you should, the smell shouldnt be too bad even if you are sweating.
No…Its the people who smell before they even start working out.