Question

WHY DO WE OFTEN SNEEZ WHEN WE INHALE A LOT OF DUST-LABEN AIR

Answer 1

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sneezing, our body tries to expel the dust particles from the air we inhaled so that only clean air enters our body.

Answer 2

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• We often sneeze when we inhale a lot of dust-laden air to expel out these foreign particles. These particles get past the hair in the nasal cavity and irritate the lining of the cavity which  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 nostrils. Sneezing is a type of defense mechanism used by our body.