Absolutely right!https://twitter.com/tlbtlbtlb/status/1247282021673488384 …
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Unless the mask is fully made of copper it will not kill all viruses (I think). To deactivate viruses landed on a cloth mask you just need to put it in boiling water or so. A copper-rich mask could be good when you don’t have access to heaters/sun/soap.
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Forget making them. I just bought 3 of these. Reusable Bio Block masks with copper and zinc infused cotton.https://m.jpost.com/health-science/amid-pandemic-panic-infused-cotton-can-beat-corona-and-staph-infections-618998/amp …
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