New Study Shows Cloth Mask Are Useless.. 90% Or More Gets Through... Imagine My Shock

 

News Article https://www.dailymail.co.uk/health/article-10565993/Cloth-masks-allow-90-particles-filter-giving-little-ability-prevent-Covid.html 

 Study https://aip.scitation.org/doi/full/10.1063/5.0074229