If you’re like 98 out of 100 women, you have B.O. (Not right now! We mean in general.) Stinky pits are normal. Underarm sweat mixes with bacteria and the result is that familiar straight-from-the-gym smell. But some people—the remaining two out of a hundred—carry a form of a gene that stops the stink-inducing reaction before it starts. Lucky ducks, right? Interestingly, a group of researchers found that most of them wear deodorant anyway.