zlacker

[edit after re-reading parent comment]

This article offers some links and data on the effectiveness of even homemade masks at filtering particles:

https://smartairfilters.com/en/blog/diy-homemade-mask-protec...

>>gdubs+(OP)
The link you posted is commercial (selling air filters), better to link to the original study from which this is based:

https://www.researchgate.net/publication/258525804_Testing_t...

>>gdubs+(OP)
Liability. Tell people that makeshift masks offer coronavirus protection, and hear the class action lawyers sharpening their quills from a hundred miles. Even if the masks, deployed at scale, help reduce the R factor.

>>pacala+w1
Just have employees sign a waiver.

>>oski+u2
That's a good point. To complete: Just tell CDC to tell employers to have employees sign a waver.