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A comment on Estimated 1.56B face masks will have entered oceans in 2020. Parent comment

Re:Estimated 1.56B face masks will have entered oceans in 2020 by ceejayoz on Tuesday December 15, 2020 @04:09PM (#25435292)
> with a retrofitted exhalation valve filter
[ Parent | on HN ]
Re:Estimated 1.56B face masks will have entered oceans in 2020 by appleflaxen on Wednesday December 16, 2020 @01:58PM (#25446804)
that definitely fixes it.

is there a way to know who has the exhalation filter and who doesn't, though?

How does a high-volume retail store know whether the rando with the elastomeric mask has a sufficient exhalation filter or not?

That is my big concern.

[ Parent | on HN ]