Question

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

Answer 1

we often sneeze when we inhale a lot of dust , because :- The dust irritate the mucus lining of the nasal cavity, and as a result we sneeze.

Answer 2

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.

Hope it helps you ❤️