#1 Surgical mask
It usually has three layers. It is a basic defense against some viruses.
#2 N95 mask/respirator
It is a safety device that covers the nose and mouth and helps protect the wearer from breathing in some hazardous substances. It is designed to filter out at least 95% of the dust and mold in the air.
#3 Cold weather face mask
It can protect you from cold and wind. It is usually made of wind-breaking material like nylon blends. But it doesn’t help much in the context of virus.
#4 Activated carbon mask
Mask with a charcoal filter cuts out odours effectively making it ideal for general purpose, especially suitable for use across various industries such as engineering, manufacturing, pharmaceuticaland many more.