Wearing multiple masks is more absurd scientifically than drinking one's own piss, and it's even more disgusting to people who know a little bit about metabolism and how different organs (kidneys/bladder, gut, lungs, skin) excrete different waste products.
I would imagine wearing masks probably is quite disgusting when your breath smells like urine.
Scientifically it comes down to a matter of sterility, but I wouldn't really expect you to understand much about that. It's a bit over your pay-grade so it would seem. If a person is healthy and absent various kinds of urinary tract infections, fresh urine should be quite free of microbes. Exhaled breath vastly less so.
I know people do sometimes drink fresh urine for assumed health reasons, but it isn't my thing and I've not put in any research into it. (Which, parenthetically, means that I'm not going to spout off about it that much...I'm not a paid propagandist targeting the lowest common denominator of sheep with supposedly funny and largely bogus 'information' either.) If someone does a proper study demonstrating positive effects of urine drinking, and if a demonstrably independent entity finds the results to be reproducible, I'll accept it. I still wouldn't do it because my concern about the 'dangerous menace' of 'covid-19' is pegged at right about zero. Right where it's been since mid 2020 when enough was scientifically understood to realize that the whole thing is a hoax and a fraud.