Myth: N95 respirator masks are the only kinds of masks that protect against COVID-19
This is not true. N95s offer some of the best protection against the virus because if worn properly and if forming a tight seal around the mask and face, they filter out 95% of particles. Cloth masks and surgical masks are more loose than an N95, but studies show that they offer significant protection against the spread of the virus. It’s important to wear a mask when around other people and maintain six feet distance.
Source: https://www.sciencedirect.com/science/article/pii/S1477893920302301