If you are suffering from common cold, you must always cover our mouth and nose while coughing or sneezing. Think why?

Explanation

### Step-by-Step Solution:

1. **Understanding Common Cold**: The common cold is a viral infection that affects the upper respiratory tract. Symptoms include a stuffed nose, running nose, sore throat, and sometimes fever.

2. **Transmission of the Virus**: The common cold is primarily transmitted through respiratory droplets. When an infected person coughs or sneezes, tiny droplets containing the virus are released into the air.

3. **Infection Risk**: If a healthy person inhales these droplets, they can become infected with the virus. This is how the cold spreads from one person to another.

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