The study found that talking gave off about 10 times more particles than simple breathing without wearing a mask.
from Homemade masks release fibres into air, important to wash them, says research amid COVID-19 outbreak https://ift.tt/337s5NO
https://ift.tt/eA8V8J
from Homemade masks release fibres into air, important to wash them, says research amid COVID-19 outbreak https://ift.tt/337s5NO
https://ift.tt/eA8V8J
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