Guardian: Some Covid masks are better than others. I know – I’m the Mask Nerd

Some Covid masks are better than others. I know – I’m the Mask Nerd | Aaron Collins

s a mechanical engineer with a background in aerosol science, I often wondered why months into the pandemic we were still using cloth masks. People used similar coverings during the Spanish flu pandemic in 1919, more than 100 years ago. I knew better mask technology existed, and people needed to know about it.

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