I have two drawers of tea towels. Fabric from the 1950s to today. The weave is too wide. A kleenex would be better. Did it say how many layers of tea towels?
Just read an article on making a mask from 3 layers of t-shirt fabric. IMO, again, too loose a weave and it stretches making the holes even larger.
Since we are on the topic of diy... I have some aloe vera gel and 70% rubbing alcohol. I thought about combining to make hand sanitizer but I don’t know the ratio should be. Or would combining dilute the alcohol too much?