Comments by "Z P" (@zachman5150) on "Texas Walmart Shoppers React To New Face Mask Mandate | NBC News NOW" video.

@fv6125 An N-95 mask still lets 5% of anything smaller than 3 microns thru all the time. At 10% relative humidity to lets particles up to 8 microns thru. The Wyhan corona virus is 1.25 Nano microns big, that's : 0.00125 microns. That's 2400 times smaller than what an N-95 mask can filter. Yes, you can catch the flu wile wearing an N-95 mask. "More to the point, indoor airborne virus concentrations have been shown to exist (in day-care facilities, health centres, and onboard airplanes) primarily as aerosol particles of diameters smaller than 2.5 μm, such as in the work of Yang et al. (2011): If his view of the mechanism is correct (ie. "physical loss"), then Shaman's work further necessarily implies that the dryness-driven high transmissibility (large R0) arises from small aerosol particles fluidly suspended in the air; as opposed to larger droplets, which are quickly gravitationally removed from the air. Such small aerosol particles fluidly suspended in air, of biological origin, are of every variety and are everywhere, including down to virion-sizes (Depres, 2012). As a matter of fact Brooke et al. (2013) showed that, "contrary to prior modeling assumptions, although not all influenza-A-infected cells in the human body produce infectious progeny (virions), nonetheless, 90% of infected cell are significantly impacted, rather than simply surviving unharmed. All of that to say that: if anything gets through (and it always does, irrespective of the mask), then you are going to be infected. Masks cannot possibly work. It is not surprising, therefore, that no bias-free study has ever found a benefit from wearing a mask or respirator in this application. Therefore, the studies that show partial stopping power of masks, or that show that masks can capture many large droplets produced by a sneezing or coughing mask-wearer, in light of the above -described features of the problem, are IRRELEVANT."
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