Why Do People Sneeze?

There are many sensitive cells in the mucous membrane. When spicy smells or some other small irritants go into the nostril, the cells tell the brain immediately. The brain gives an order for the lung to take a deep breath and then to contract the chest muscle suddenly. And at last the air spurts out quickly just like a gale of wind, which pushes the things out. This is the process of sneezing. Like coughing and tearing, sneezing also protects your body.