The sense of smell helps us know what and where things are, like yummy food.(R. Suarez. )
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Inside your nostrils, there are tiny things called neurons that “talk” to each other using electrical messages (our brains are mostly made of neurons too, by the way).
Olfactory neurons (green, blue and red), located at the roof of the nostrils, recognise molecules and send electrical signals to neurons in the olfactory bulb (yellow).(R. Suárez)
The sense of smell works in similar ways in both vertebrates (mouse olfactory bulb in orange) and invertebrates (moth antenna in orange).(R Suárez.)
