Not I, not I, but the wind that blows through me! -D H Lawrence
It's a charmed life that astronauts lead. Wouldn't the catheters that carry more solid things from astronaut's behind have some de-gassing contraption? If not, it's a charmed life indeed. You can get a taste (smell? either way, what a nasty pun) of it if you sniff under the collars in winter when you are totally wrapped in wool. (Admit it, you have sniffed, haven't you).