Gas masks are technically designed to protect the nose and mouth from harmful gasses and microscopic particles. They are also known as PPE (personal protective equipment) and face fitted PPE. 

They can be used in a variety of situations. These masks come in many styles due to their diverse purposes.  You can navigate to https://www.gasmaskpro.com/gas-masks/m-15-gas-mask-wfilter to buy the best-rated m15 gas mask. This protective equipment allows air to flow through a filter before it is inhaled.

Gas masks can be used to dress up for theme parties and other less serious events. However, these protective gears were heavily used in the Second World War. For any threat or harmful biological weapon from their enemies, as well as terrorists, modern armies must still provide their troops with full-face gas masks.

These protective equipment can also be used for industrial purposes. In most industrial settings, protective equipment such as face masks and respirator protection are required.

Some manufacturers also include neutralizing filters. Manufacturers produce simplified versions for industrial respirators in a variety of colors to appeal to fashion-conscious consumers. Some masks feature monograms of popular brands' logos. 

These protective gears can be used not only as an accessory but also for law enforcement. For special purposes, such as riots, most police departments have to issue gas masks to their teams.

Gas masks can be used for many reasons. These protections are designed to protect people from biological threats from terrorist groups and social deviants, regardless of how they're used.