re: Smelling in space
When the frogmen opened the Apollo capsule hatch, at the end of a mission, they were struck by a disgusting smell coming from inside. I believe one even almost threw up.
The thing is, if you are in a smelly capsule, you smell it yourself and don't realize it! Astronauts have complained about lots of things, but not really about the smell.
Yes, they kept their garbage until the end (except those specifically produced on the Moon).
Skylab astronauts never got rid of their garbage which was stuffed in what would have been the LOX tank if the station had been used for the Moon and not transformed into a habitat.
Raoul