Question

why do we sneeze?when we are caught by cold

Answer 1

If you just sneezed, something was probably irritating or tickling the inside of your nose. Sneezing, also called sternutation, is your body's way of removing an irritation from your nose. When the inside of your nose gets a tickle, a message is sent to a special part of your brain called the sneeze center..
Why do we sneeze when sick?

Sneezing. Sneezing is triggered when the mucous membranes of the nose and throat are irritated. When a cold virus infects nasal cells, the body releases its own natural inflammatory mediators, such as histamine. ... This leads to the irritation that causes sneezing.

Answer 2

A sneeze, or sternutation, is a semi-autonomous, convulsive expulsion of air from the lungs through the nose and mouth, usually caused by foreign particles irritating the nasal mucosa. ... The function of sneezing is to expel mucus containing foreign particles or irritants and cleanse the nasal cavity.A cold virus spreads through tiny, air droplets that are released when the sick person sneezes, coughs, or blows their nose. You can catch a cold if: ... You touch your nose, eyes, or mouth after you have touched something contaminated by the virus, such as a toy or doorknob.


I hope this helps you