3 interesting chemistry questions anwsered

Why do some smells (garlic, smoke, etc.) "stick" to skin/clothes more than others?

Moses are more sensitive to certain smells than others. I would venture that molecules stick around relative to their affinity for the substrate (skin, cotton, etc.), but a tiny amount of skunk thiols would smell more intensely than whatever makes roses smell as such. There's an evolutionary aspect there, where its beneficial to smell "stinky" molecules that are usually dangerous to us (and to avoid them), than to be super sensitive to roses and the like. Remember, smell intensity is relative.
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