Jorge Selva
@selva
People living in cities: are you concerned about exposure to fine particulate matter in your daily life and are you doing anything about it? https://twitter.com/LongevityExp/status/1645111145999773697
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Kevin Sakemaer
@kleak
I wear an r-pur mask when I go into big cities
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Jorge Selva
@selva
these look interesting. i’ve thought about masking up while outside.
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