Anal play

Hey everyone so my SO has been really pushing for anal play lately and I want to try it out because I never have before but I'm terrified it will either 1) smell, or 2) poop will come out. It's so dumb to even think of these worrying my SO as he doesn't get grossed out by this but I'm freaking out! He doesn't want to have anal sex right away but he wants to play with it a bit as in using toys, his mouth and fingers. Any advice on how to clean that area out or what the experience is going to be like?!