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The CDC itself says cotton masks (bandanas, scarves) help: https://www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/face-masks.html https://www.cdc.gov/coron
by all_blue_chucks 7y ago
The CDC itself says cotton masks (bandanas, scarves) help:
https://www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/face-masks.html https://www.cdc.gov/coronavirus/2019-ncov/hcp/ppe-strategy/f...