Question

Why should be keep a handkerchief on nose
and mouth while sneezing or coughing​

Answer 1

Explanation:

When we cough and sneeze, those droplets go into the air. "It's our responsibility to cover mouth and nose so those droplets don't go into the air... so they don't spread to other people," says James Mamary, MD, a pulmonologist with Temple Lung Center at Temple University Health System in Philadelphia.

Answer 2

Answer:

as because bacteria comes out through outlets of our body so to cover it and not spread that to all

Use mask when u go out because it prevents you from any infection if any one negelates covering their nose and mouth