Common sense on masks
Informative article - thank YOU - I will be passing on to those who are still attempting to make sense out of nonsense ...
The Science of HEPA filtration demonstrates capture of Exhaled Covid19.
https://geoffpain.substack.com/p/how-masks-capture-your-exhaled-covid19
Informative article - thank YOU - I will be passing on to those who are still attempting to make sense out of nonsense ...
The Science of HEPA filtration demonstrates capture of Exhaled Covid19.
https://geoffpain.substack.com/p/how-masks-capture-your-exhaled-covid19