An antimicrobial coating developed by Quebec company I3 BioMedical Inc. can deactivate more than 99 per cent of SARS-CoV-2 – the virus that causes COVID-19 – on the outer surface of medical masks, following tests carried out by University of Toronto scientists. And scientists found that the novel coating deactivated SARS-CoV-2 within minutes, a finding that could represent a huge boon for health-care workers who are at risk of being contaminated with the virus by touching or adjusting their face masks. Indeed, the coronavirus has been shown to be present and infectious on the outer layer of masks for up to seven days, according to a recent study published in The Lancet Microbe.
https://www.utoronto.ca/news/u-t-tests-show-canadian-made-mask-deactivates-99-sars-cov-2-virus