Aug 3, Ant Man, who hopefully does not keep his semen in an old towel. Of all the surprising things one learns about human nature by spending a lot.
Jun 3, Most adults these days have had a roommate, and you've probably heard some anecdotes about gross ones—but you probably haven't heard.
I don't know how the mould will appear on semen - it may not be as obvious as mould on bread. I doubt that you are allergic to the mould, there.