When you sniff a particular scent, your brain cells fire in a recognizable pattern.
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Brains recognize a smell based on which cells fire, in what order – the same way you recognize a song based on its pattern of notes. How much can you change the 'tune' and still know the smell?
The good news is: you'll probably get it back.
Cookies taste so good. Smell tells us that before we even take a bite. How?
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The sense of smell helps us know what and where things are, like yummy food. R. Suarez.
The parts of the brain that get 'smell signals' from the nose also do other things, such as storing memories or provoking emotions. That is why some smells can bring back old memories.
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