Question

why do we sneeze when we inhale a lot of dust laden air?

Answer 1

we sneeze when we inhale a lot of dust laden air-when dust particles enter our nostril, it triggers a message to the brain. The brain instructs the nasal chamber to initiate sneezing. This is a method to remove the unwanted dust particles from the nostril. sneezing is a type of defense mechanism used by our body.

Answer 2

sneezing is a type of involuntary reaction. the dust particles get trappeed in the hair nose.when it is trapped it irritates to sneeze. by this mechanism we get sneeze.