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  • Does anyone know if cycling face masks even begin to stop the kinds of particulates we've seen in high concentration this morning? This morning's ride has left me feeling like crap I might nip out and buy one for the ride home - that or do it at snail's pace.

  • Does anyone know if cycling face masks even begin to stop the kinds of particulates we've seen in high concentration this morning?

    IIRC, they stop PM10 only, but it's the PM2.5 which are the real killers. That makes cycling face masks more of a political gesture than a health protection.

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