A series of layers of fabric makes more places for virus particles to stick instead of going out into the air. A filter helps in this process. But too many layers might make it hard to breathe. Use the mask that's most comfortable so you're more likely to keep wearing it.

What kind of mask should I wear during the COVID-19 pandemic?

People must wear masks that completely cover the mouth and nose. Masks should fit snugly against the sides of the face. See CDC's guidance for attributes of masks needed to fulfill the requirements of the Order.

How can surgical masks protect me from COVID-19?

If worn properly, a surgical mask is meant to help block large-particle droplets, splashes, sprays, or splatter that may contain germs (viruses and bacteria), keeping it from reaching your mouth and nose. Surgical masks may also help reduce exposure of your saliva and respiratory secretions to others.