Cover your mouth when you cough or sneeze.

Meaning: This is a polite thing to do to prevent the spread of germs. When you cough or sneeze, germs can come out of your mouth and nose and spread to other people.

Choice of Words: The word cover means to put something over something else to protect it or hide it. Mouth is the part of the face that you use to speak and eat. Cough and sneeze are both words for the sudden release of air from your mouth and nose. So, when you cover your mouth when you cough or sneeze, you are preventing the spread of germs.

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Related Expressions