1/n Can ONE genius bioengineering lab help with the following experiment ?
a. Take a homemade double/triple layered cotton mask
b) Establish the size of particle and filtration efficiency per size (or droplet) and plot a curve (x axis size, y axis filtration efficiency)

2/n c) Heat the mask at 70 degrees celcius for 30 minutes
d) Repeat the experiment
e) Do this for 5 or 10 times over
f) Give us the data
The question is: do repeated decontaminations of homemade masks change the filtration efficiency?

3/n The particle size should cover the range -- from 0.2 microns all the way to 1000 um. Respiratory droplets, all droplets generated by an expiratory event, have diameters d that cover a large size range from approximately 0.6 to more than 1000 µm.

4/n Remember that the perfect cannot be the enemy of the good. At low dose viral exposure, most virus LIKELY does not travel as a lone virus, but in respiratory droplets from coughing etc. So, the real protection is against droplets.