I actually think sweaty guys are attractive, only if they've been playing sports. And sweaty only, smells are not in the package!
It's like, they come home from football/basketball/soccer practice and they look all rugged with the weird hair and still a bit sweaty - WOOH BABY!

That's just me.
In the 8th grade, I hung out with a girl who had some BO. I never realized it was her, and thought it was me. I got so paranoid I put deodorant on several times a day (I'd sneak to the bathroom and put it on) and wear body spray because I was PETRIFIED of being smelly. I'm still like that actually, although I've lessened on the body spray.