LOS ANGELES - Mask wearing is becoming the norm amid the pandemic. A growing list of states and cities require individuals to wear face coverings in public, while many major chains and businesses are refusing to let customers into their stores if they aren’t wearing one.But a recent study by Duke University suggests that one type of mask may not provide a wearer with protection from being infected with COVID-19, and could even increase the risk of spreading the coronavirus to others through respiratory droplets.A proof-of-concept study published by Duke University researchers in the journal Science Advances measured 14 different types of masks — including two types of N95 masks, several cotton-based masks, a neck fleece and a bandana — and.