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If masks reduce particulate matter leaving your mouth and nose, why wouldn't they reduce particulate matter coming in as well?
by ALittleLight 6y ago
If masks reduce particulate matter leaving your mouth and nose, why wouldn't they reduce particulate matter coming in as well?
- tonyhb 6y agoMasks do that. N95 masks prevent vs reduce. It's just disingenuous to say that masks prevent illness. Your average mask will provide some protection, but not prevent illness.
- mewpmewp2 6y agoWe were using the word "protect" though, but "prevent" can also be correct actually as neither have implication that they do it with 100% effectiveness. Helmet protects you or prevents your head from getting damage, but they don't guarantee survival in a high speed crash.