Question

3. Why do we often sneeze when we inhale a lot of dust-laden air.
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Answer 1

Answer:

Our nose has filters. When we inhale lot of dust laden air it stucks into the filter and our brain gives signal to sneeze. When we sneeze, we get rid of the dust.

Explanation:

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Answer 2

Answer:

we often sneeze when we inhale a lot of dust-laden air as these particles irritate the lining of the nasal cavity