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Nov 27, 2015 · 1) Why is it called 2.5? The 2.5 in PM 2.5 refers to the size of the pollutant in micrometers. Additionally, particulate pollutants vary in size and the smaller they are, the more damage they cause to your health. PM10 is particulates that have a diameter of 10 micrometers or less. Dust particles are the main source of PM10.
ConclusionMasks including surgical masks and N95 masks can capture viruses and even particles over 10 times smaller. 2. OK, they can capture particles even smaller than the coronavirus, but when you wear them, all the air just leaks in the side. The skeptic caseMask works in theory, but those tests arent on real faces!
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