This was actually tested by students at one of my universities; now if only I had a 3d printer... https://www.concordia.ca/news/stories/2021/07/26/surgical-mas

This was actually tested by students at one of my universities; now if only I had a 3d printer... https://www.concordia.ca/news/stories/2021/07/26/surgical-masks-more-effective-if-worn-with-3d-printed-frame-concordia-phd-student-finds.html https://www.concordia.ca/news/stories/2021/07/26/surgical-ma...