Chris Hadfield Explains Why It’s Difficult to Smell in Space

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Chris Hadfield is definitely one of our favorite astronauts, and as part of his stay on the International Space Station he’s been explaining how stuff works up there and performing experiments. This particular video was shot before the big issue with the ammonia leak, but it only seems right that Hadfield recently discussed why it’s particularly difficult to smell in space. Hint: It has to do with your head swelling up.

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