(Wearing one is good...wearing two is gooder.)
Wearing 7 is goodest.
Now in cold weather, I do wear my cloth one because I’ve always been susceptible to catching the flu, easily, even while pumping my gas ⛽ (should have filled up before it jumped 27 cents a gallon 2 days ago).
A facemask is mandatory for me when doing dusty work around the house...yard work, sanding sheetrock, grinding brick/rock, sawing MDF trim.
NOT wearing a mask when I was younger/stupider led to noticeable lung issues. Even with a mask now...I hack up stuff the next day.
You gotta take care of your lungs!
Are more viruses in the air as the temperature cools?