Question

You can smell the rotten fish from a distance

Answer 1

we can smell the rotten fish from a distance because we have olfactory receptors in our nasal cavity & the rotten smell diffuses into our nasal cavity & activates the olfactory receptors they send signal to the brain which analyses the smell

Answer 2

we can smell the rotten fish from a distance because we have olfactory receptors in our nasal cavity & the rotten smell diffuses into our nasal cavity & activates the olfactory receptors they send signal to the brain which analyses the smell