Nikolai Nikolayevich Rukavishnikov, who died OTD in 2002, flew into space 3 times on Soyuz 10, Soyuz 16, and Soyuz 33, in 1971, 1974, and 1979 respectively https://toilet-guru.com/spacecraft/?s=mb #spaceflight #history
Toilets of the WorldToilets in SpaceHow do you go to the bathroom in space? With a Space Toilet, of course! You can see several at the National Air and Space Museum. All this and more on the Toilets of the World.