Question

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

Answer 1

we sneeze because sneezing is a process of removal of dust dirt. So when we inhale a lot of dust laden air, we inhale a lot of dirt, so to remove it we sneeze

Answer 2

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• When we inhale dust laden air, the dust irritates the nose;as a reflexive action;dust is thrown out through sneezing