Female and male passengers wearing facemasks during the flight. — Photo by NURPHOTO VIA GETTY IMAGES

Delta is tightening regulations for mask-wearing on its flights and released a statement this week that masks with exhaust valves are no longer allowed on their aircrafts. "Any mask with an exhaust valve is not approved as an acceptable face mask for customers traveling on any Delta operated flight," the Delta website now states.

Masks with exhaust valves are intended for use in industrial environments like construction to avoid inhaling material particles, however they do not prevent the spread of virus particles. The exhaust allows virus particles to escape the mask which means that if you have COVID-19, you can spread the disease while wearing the mask.

So, what type of mask should you wear? A simple cloth mask that covers your nose and mouth at all times suffices. If you're not sure about your mask then Delta also provides masks to wear.

Read the full article at Forbes