They say us: wear masks to protect yourself from the coronavirus! But there are many types of masks. Which mask to choose? Do masks really protect? If I cannot buy a mask, can I make one? These reputable sources (Centers for Decease Control and Prevention and Johns Hopkins) provide comprehensive information on masks:
Mask FAQs:
https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/cloth-face-cover-faq.html
How to do a mask yourself:
https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.html