Question

3. Why do we often sneeze when we inhale a lot of dust-laden air?​

Answer 1

Answer:

When we inhale air containing dust particles, the particles get trapped in the hair present in nostrils. That's why we sneeze..

Explanation:

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Answer 2

Answer:

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

                                             (or)

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.

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