Block it. Let in the O2 and the N2 but not the bad stuff. Stuff that works its way deep into our tender lungs that are working night and day to clean themselves out. Better to pre filter than post cough.
Block it. Let in the O2 and the N2 but not the bad stuff. Stuff that works its way deep into our tender lungs that are working night and day to clean themselves out. Better to pre filter than post cough.
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