Not the masks that I used. Local women knowledgeable in textiles made them with two layers of closely woven cotton (with pockets for an extra filter if needed), large pipe cleaners (from craft departments, for the fit around the bridge of the nose), elastic bands and a snug fit for local doctors, nurses, nursing home employees and store employees. Advice for the mask designs came from medical people, medical suppliers, industrial engineers and textiles technicians around the world. Very comfortable. They’re shaped somewhat like the Asian sand storm mask in the old Mortal Kombat 2 video game, where the character said, “Get over here!” ;)
May your chains rest lightly upon you.
I make my own masks according to a free pattern you can download online, called the "Jesse" pattern. It is the only pattern I've seen which comes in different sizes. You measure in two different directions as described on the website and the resultant mask is then exactly the right size for you. You can now buy aluminum strips with rounded ends to enclose in a pocket on the mask (I use twill tape to form the pocket) to make the nose snugger. I buy nylon athletic shoelaces which are long and cut them in half. I then flame the ends briefly to make them ravel-proof and use them as the ties. I use closely woven cotton in 2 layers plus an interior layer of lightweight interfacing. I wear the mask once before adding it to my used mask pile, and then wash them in detergent and hot water. I don't think I have those chemicals to worry about, but I wish COVID was "over" so I could dispense with wearing masks in stores and while at the doctor.