Have any researchers taken samples from all of the global, "COVID-19" (RT)-PCR test$ and Antibody test$ to evaluate the possibility of any micro- and/or nano-contamination?
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Embry is right here! Mask is made up of nanoparticles, which is toxic and can affect respiratory system such as lungs etc.
I believe the nanoparticles resemble Covid variants in size and other dimensions! In short, I would also suggest there is no existence of coronavirus, but micro or nanoparticles which are toxic to human being.