How risky is analingus, a.k.a. rimming, with a woman i know is clean?

[Wingman]

I know she is STD free, we are with each other exclusively.
I adore her natural scent, and I don't want her to take a shower before I rim her. I want to do it when she gets home from work.

It's not like she's dirty or anything, she is a very clean person. Even if she is sweaty she smells so good. It must be pheremones.

Anyway, I should be okay right?

 

[AnnekeR]

Yuck.
Just do it I guess and hope she doesn't fart.