“How can we filter away harmful particles with a mask?”
In many parts of the world, dealing with heavy air pollution is a daily issue. As a result, people will need to have some form of protection. This is commonly found in the form of N95 Respirators, which are designed to block at least 95 percent of very fine particulate matter. However, caution will need to be taken with these masks, as they are not designed for small children or people with facial hair.
Image credit respiratormaskprotection.com