smells and germs - am I overly critical?

I'm a guy and I watch porn. There's a fair amount of anal activity that goes on. And I am turned off by that - in porn and real life because of my perception of it being 'unclean'.

is there any prep (other than maybe a shower?) that people that are into anal have to (want to) do?

Seems it's easy enough for a woman to get a UTI from regular sex if they don't pee afterwards (am I correct). Meanwhile, people are sticking things in butts... and then into mouths or vagina.

Isn't there taste / smell issues? Or their sh*t really doesn't stink? And germ issues?

on a lighter issue... for a healthy woman, they are going to have some odor from up front and or from their butt, right? Unavoidable? are people just able to tune that out?

Thanks!