This question was submitted by Becky.

What does it smell like in space?

Well inside the pressurized volume where we live it pretty much is a controlled climate so it does not smell like much of anything (unless we ourselves generate smells with our food, hygiene products, etc.). When people come in from spacewalks it is very interesting because they bring with them a specific smell, which is kind of metallic-burning like. It probably has to do with all of the materials of their equipment and suit out-gassing in the vacuum, but it is a distinct smell.