Originally Posted by
gglave
While I never go to the lav in socks or bare feet you can take some comfort in the fact that urine is sterile. You'll never get an infection from walking in urine. In fact, you might sterilize your cuts

This is kind of misleading... Urine is sterile, unless the person has a urinary tract infection, or kidney infection.
Basically, urine is sterile, unless it's not...
So, would you bet that out of all 200 people on your flight, none have an active UTI?