How amazingly cruel of that person Apart from the comment being cruel I very much doubt that it's true, and apart from *that* - everybody smells, in one way or another. Pure biology.

But to the issue: I thought it was mostly temperature (high) that killed bacteria, not the kind of soap? I know all my training clothes stink to high heaven after a day or two, and the only way to get the smell out is to wash them at high temperatures even though I'm not supposed to.