Anilingus goes by many names: rim job, rimming, salad tossing; and is a popular form of ass play that people of all genders can find enjoyable. Sex is messy and occasionally risky business - anilingus is a form of oral sex and thus no different. If you’re with a new partner, the typical discussions need to happen - any STIs, general health, preferences, body hair, etc.
After you’ve given anilingus the green light, make sure you’re clean and trimmed! Relieve yourself before play and perhaps do an enema to be extra squeaky clean.
If you’re concerned about health risks, use a dental dam as a barrier, there are lots of ways to have fun and keep yourself protected. For this form of oral sex, it is important to maintain the area trimmed and clean. Poop particles are tiny and stick to places you don’t want them - you don’t need to be clean shaven, but trim and clean will help prevent the spread of things you don’t want in your mouth.
If you are concerned about it have no fear, there are plenty of other ways you can play with that ass!