Later Gaiter? Not So Fast.

The small Duke University study generated alarmist headlines when it found the popular “neck gaiter” was even worse than wearing no mask at all.

One potential theory held that breathing through the flimsy material fractures the larger droplets into tinier, lighter particles that linger longer in the air. 
 
Aerosol scientists don’t buy that theory, and the researchers behind the Duke study say a takedown of the neck gaiter wasn’t the point of the study, anyway, The New York Times reports.
 
Rather, in the absence of standards for fiber-count and filtration performance, they wanted to create an inexpensive way to test masks’ efficacy, which they did using lasers and smartphone cameras, WIRED reports.  
 
Their method would create a “fireworks display” when unchecked respiratory particles were propelled into a cardboard box—and a less entertaining show when those particles were shielded by effective masks.

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