Is it true that covering your nose and mouth to prevent germs?

Yes, covering your nose and mouth can help prevent the spread of germs, particularly respiratory viruses. Masks can block droplets that carry pathogens, reducing transmission, especially in crowded or enclosed spaces. Additionally, this practice is part of good hygiene and can protect both the wearer and those around them. However, it's also important to combine this with other preventive measures like handwashing and vaccination for optimal protection.