There are people working on it: https://www.cbc.ca/news/technology/next-generation-masks-ppe-research-1.5894303 https://www.cbc.ca/news/technology/next-generati

There are people working on it: https://www.cbc.ca/news/technology/next-generation-masks-ppe-research-1.5894303 https://www.cbc.ca/news/technology/next-generation-masks-ppe...