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A substance can't be devoid of a smell just because it's come from a place with low air pressure or no atmosphere. The chemical composition hasn't changed. Your olfactory nervous system will pick up on the smell of something if you are in a pressurised, helmetless environment where you can use your nose.
Originally posted by squintingcat
..........why does moondust smell?is it possible to have a smell without once having an atmosphere?.