This patient support community is for discussions relating to relationships, abstinence, arousal problems, birth control, cohabitation, commitment, communication, couples counseling, desire, sexual technique, and sexually transmitted diseases (STDs).
My boyfriend and I have had anal sex a number of times and I've never noticed too bad a smell coming from his penis. This probably sounds nasty and all but I don't believe we've ever used a condom doing anal. So if I haven't noticed a smell coming from my boyfriend, then I highly doubt you have too much to worry about. Either your partner had a really rank dirty anus or you just have a stanky penis, at the time. I don't think you have anything to worry about. lol Think about it, you're penis ain't gonna smell like roses after sex, whether vaginal or anal. :P
-Jag