I didn't read the entirety, but looks like a good and indepth article. Saving it.
It would be good if people would stop storing their masks under their chins "while not in use" tho...hands pick up and we touch our chins, mask placed there, then the mask is put back over nose and mouth. Yeesh
I bought, on Amazon, a necklace that attach's to the mask. Same concept as a necklace that attach's onto your glasses. It's great. When you are not wearing the mask, it hangs on the necklace. I use this because at work, I'm taking the mask off when I'm in my office.