Quote:
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In a typical setting, only about 10% of the dust is large enough to be visible to the naked eye. Most dust particles are 5 microns or less, which are so small that they can’t be seen and tend to remain suspended in air for so long that only HEPA filters can take them out. This means that for every piece of dust you see floating in the air there are 9 more that are too small for you to see.
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SOURCE:
https://info.hughesenv.com/what-is-the-size-of-dust
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So the coronavirus is about 0.12 microns in diameter...
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SOURCE:
https://newsnetwork.mayoclinic.org/d...ecommendation/
Seems like a lot of sources are ignoring an obvious fact about this virus. Once it is in the air, it pretty much STAYS there unless something removes it.