What causes you to cough?

Answer 1

We sneeze when something irritates the inside of our nose. Say there's a lot of dust in the air. When you breathe in through your nose, the dust particles go inside along with the air. Once inside, they get caught in a sticky layer of mucus that lines the inside of your nose. Usually, tiny hairlike projections called cilia move this layer of mucus toward the back of your nose where it's eventually swallowed. But, if some of the dust bothers any of the sensitive nerves inside your nose, you suddenly feel a tickle inside your nose, triggering a sneeze. Immediately, your nose starts making more mucus, you take in a big breath of air, your eyes close, and your head tips back. Then, your lungs forcefully release the air, causing it to burst out of your mouth and nose. The sudden burst of air dislodges or completely removes the irritating particles in your nose, relieving the tickle and protecting your body from the possibly harmful particles.

Answer 2

Irritation on the airways. When you cough you rapidly force air out of your lungs and the airways are cleared

Answer 3

Something irritating the inside of their nose.

Answer 4

a sneeze is caused by irritation or itchiness in your nose or nasal passeges