23. Do Face Masks Help?
If you’ve seen footage of China, chances are you’ve seen many people wearing face masks. Face masks do offer some protection against direct infected liquid droplets entering the lung. However, they do not block smaller particles in the air that can breach the material of the mask.
The mouth is also not the only point of entry for a virus. Masks cover the mouth but leave the eyes exposed. There is some scientific evidence that viruses can enter the body through the eyes.