Why ?
We don't wear them for the flu, and it is becoming increasingly apparent the mortality rate for COVID-19 is no worse than the flu (~0.01%).
Here is a link to U.S. Covid data including deaths and deaths per million, as well as flu deaths averaged over a ten year period. This side by side comparison alone proves that Covid-19 is more lethal than the flu.
https://www.realclearpolitics.com/coronavirus/country/united-states/