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Why does your nose get used to a smell?

Asked by alive (2953points) March 16th, 2009

When you wear a perfume or cologne, or you use a fragrant body wash, shampoo, gel, lotion etc. Or just when you are surrounded by a smell, why does your nose get used to it so that you can no longer tell if it is there?

And how does it do that? Does your brain just stop detecting the given odor?

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