How do you not get sick

from eating ass and drinking pee

(both of us have no diseases and clean body well)

i wanna try eating his ass out and drink his pee but i always back out last second thinking of the possible consequences ... reading about stuff like this (ass eating and drinking pee) turns me on but idk why cant it translate in real life ....surely when I try it once I wont be scared about it anymore right??? its like smoking marijuana for the first time you get anxious of what might happen and when u try it it seems alright??