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If a smell is made of solid particles floating in the air, if you smell something, does that mean the object being smelled is losing volume and mass?
Answer 1:

A smell could be solid particles floating in the air, but it could also be a gas or a mist (liquid particles floating in the air). However, in any of these cases, the compound causing the smell is definitely losing mass as it is whisked away by the air and into your nose.


Answer 2:

YES. Atoms in the perfume actually leave the liquid state and become isolate gas molecules. The process is evaporation; after a while the perfume is "all gone".


Answer 3:

I think smells are usually liquid rather than solid, but yes, if you are smelling something, then it is losing mass. Not a *lot* of mass, mind you, but some.



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