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Cloth masks

A cloth mask is intended to trap respiratory droplets released when the wearer talks, coughs or sneezes. It also acts as a barrier to protect the wearer from breathing in droplets released by others.

The most effective cloth masks are made of many layers of tightly woven fabric like cotton. A mask with layers will stop more droplets from getting through the mask or escaping from it.

Wearing a mask doesn't increase the level of carbon dioxide in the air you breathe.