Particle size 100 would obviously be if ya spit your bubble gum out while sneezing. The girl in the illustration is clearly not chewing bubble gum
And viruses are particle size .3 to .005. The mask does little to stop it. If you are sick wear one. Or just stay the fuck home.
Healthy people are more likely to become sick from some mask-borne illness from constantly wearing a mask than they are from catching the Wuhan.
Also, in the picture above it doesn't show the "after".
Healthy people on right - now the one without the mask is possibly infected, asymptomatic. Body is actively building immunity to this minor affront to its immune system. The one with the mask, if it caught some of the Wuhan in it, is breathing air filtered through the virus for as long as they are still wearing the mask.
The non mask wearer is getting fresh air, and a much lower dose of Carbon Monoxide from not rebreathing stale air. Healthier. Science and shit.