Smart Air engineers have been working on a series of articles testing out different materials for making DIY masks, here is a list of these super popular articles so you can have a one-stop collection of them all:
https://smartairfilters.com/en/blog/best-diy-coronavirus-homemade-mask-material-covid/
https://smartairfilters.com/en/blog/ultimate-guide-homemade-face-masks-supplemental-data/
https://smartairfilters.com/en/blog/best-materials-make-diy-face-mask-virus/
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