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Question
Why do we often sneeze when we inhale a lot of dust-laden air?
Solution
- Sneezing expels the foreign particles from the inhaled air, so that only clean air enters our body.
- It usually occurs because of the irritation in the upper breathing passage.
- This irritation happens when we inhale some unwanted particles and they get trapped in our nasal cavity.
- Smoke, dust, pollen, etc. are some of the unwanted particles that may cause sneezing.
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