Masks are not a placebo. They can help.

If you don't have a mask, then this solution is helpful. BUT. Know that different types of masks provide different levels of protection. And that wearing one is not a guarantee that you will not get infected / infect somebody else. https://twitter.com/Constance8News/status/1246186931643449349

There is an etiquette to masks. How to wear 'em, how to take 'em off, how to store, when to clean (if applicable), when to get rid; which is crucial if you really about dis mask life in the age of Miss Corona.

Here's a great thread on all the above.

https://twitter.com/DrChristineMann/status/1246262176337334272