LG
fan+HEPA
ReadingFace
CDC
the Ars Orbital Transmission
CNMN Collection
WIRED Media Group
Condé Nast
Ron Amadeo
Ars
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The "LG PuriCare Wearable Air Purifier" is a battery-powered face mask that the company says will "supply fresh, clean air indoors and out."The mask really is a tiny air purifier and features a fan+HEPA filter combo on the left and right side. A HEPA filter can stop respiratory particles (so does a normal N95 mask), but LG's press release only says the mask will "take in clean, filtered air"—it doesn't say anything about filtering exhalations.The mask is out it the fourth quarter in "select markets," but you should probably just wear a normal, lighter, cheaper, more comfortable mask.
As said here by Ron Amadeo