[nabla9]

Many people don't wear the mask properly. Wearing the mask as a chin diaper is not effective. To get the maximum protection from wearing the mask you have to don and doff correctly, fit the mask properly. You may need to shave the beard or trim it so that there is better fit.

If wearing the mask correctly decreases the changes of getting covid-19 40%-60%, doubling the time spend in risky areas because one feels protected increases the risk back to normal. Its still beneficial, but the risk does not change.