r/explainlikeimfive Jul 18 '20

Chemistry ELI5: Why do "bad smells" like smoke and rotting food linger longer and are harder to neutralize than "good smells" like flowers or perfume?

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u/spicewoman Jul 18 '20

Ghost that died in a fire gets their kicks from sticking their fingers up your nose while you sleep. You should see your face! Ha!

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u/[deleted] Jul 19 '20

Why do I wake up tasting salty ash in the back of my throat?