Answers

2016-03-06T19:25:50+05:30
We often hear elders saying to not speak loudly of laugh while food is in our mouth this is because the food gushes through trachea because of the pressure of wind this causes cough
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  • Brainly User
2016-03-06T19:28:08+05:30
It is because the windpipe resists the other items other than the air it may contaminated or pure one. that is the reason y we cough .actually it just throws out the forigen particles so we get cough
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