In this time of Pandemic and Panic - Anti-Viral Masks are "a thing". So I spent some time reviewing three different types. Here is a link to my Facebook Video Tutorial.
https://www.facebook.com/eiaft/videos/10158409432651967/
Here are some relevant links to some of the gear I talked about.
https://www.envirosafetyproducts.com/resources/dust-masks-whats-the-difference.html
https://www.envirosafetyproducts.com/3m-6001-organic-vapor-cartridge.html
https://www.envirosafetyproducts.com/3m-6200-half-facepiece-respirator.html
https://smartairfilters.com/en/blog/coronavirus-pollution-masks-n95-surgical-mask/
https://hypertextbook.com/facts/1999/BrianLey.shtml
https://www.metric-conversions.org/length/microns-to-meters.htm