Penis, cum may pick up some traces of urea or uric acid. However, these are harmless, as is healthy urine in general. The urinary tract of a healthy person contains only trace amounts of bacteria, and there are no substances in urine that are harmful to consume in the quantities excreted normally. The sort of good news is that swallowing your partner's cum will not put you at any greater risk for catching an STD. The flip side is that if your partner does have an STD, by the time you've had unprotected oral sex with them, whether you swallow or not, you've been exposed to whatever they're carrying.Ĭondom) is risky.