One of the important and rather shocking parts of the study was that certain "masks" are effectively
worse than no mask at all !
Quote:
The scientists also discovered that neck fleeces, or neck gaiters, often worn by runners, were the least effective and actually allowed more respiratory droplets to escape than not wearing a mask at all.
That’s because they were shown to break down larger droplets into smaller particles, allowing them to slip out the sides of the covering more easily.
“We were extremely surprised to find that the number of particles measured with the fleece actually exceeded the number of particles measured without wearing any mask,” Martin Fischer, one of the study’s authors, told CNN.
“We want to emphasize that we really encourage people to wear masks, but we want them to wear masks that actually work.”
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