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wanted_to_upvote t1_iz8hvnp wrote

There is new research that shows wearing a mask outside during cold may protect the wearer from respiratory viruses since very cold air reduces the effectiveness of the nasal passages immune protection significantly.

https://www.cnn.com/2022/12/06/health/why-winter-colds-flu-wellness/index.html

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Mammoth-Mud-9609 t1_iz93lma wrote

Masks do have other benefits though, firstly they keep your face warm and secondly, they reduce they reduce the amount of traffic fumes making it into the lungs.

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Srs_Bizz t1_izbr06y wrote

Generally speaking, masks can reduce certain-sized particulate matter, but have no effect on fumes until you get a serious one like a PAPR w/ chem cartridge, gas mask, SCBA, etc. Even an N-95 would not stop fumes.

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