In reality, you need a fan in an enclosed space to prevent death—at least in zero-G. https://en.wikipedia.org/wiki/Sleep_in_space https://en.wikipedia.org/wiki

In reality, you need a fan in an enclosed space to prevent death—at least in zero-G. https://en.wikipedia.org/wiki/Sleep_in_space https://en.wikipedia.org/wiki/Sleep_in_space