I haven't worn cologne since high school when I thought it was necessary. I don't even wear deodorant anymore and I don't stink even when sweating my balls off. You can smell some sweat, but it's not that pungent, disgusting odor that makes you want to vomit.  It's weird what eating well and drinking two gallons of water a day can do for you.  Side note:  I'm not recommending everyone drink that much water. I do because I work out 2 - 3 times a day at least six days a week with my rest day being a run.