With the outbreak of the corona virus flu, face masks have become a common protection tool. Sad to say that the severity of the outbreak has made the common face mask become rare.
I'd say that a paper modeler have a solution for this.. and we could also do better.
Here is the link to a basic design. Let the creativity start....
https://www3.nhk.or.jp/nhkworld/en/o...video/9999020/