A gas mask is a type of respirator that helps protect you from the harmful effects of inhaling poisonous gas. They are made up of a number of different parts, including a filter, an air-purifying cartridge, and a face piece. 

The filter traps particulates, such as dust and hair, while the air-purifying cartridge cleans the air that enters it. The face piece fits over your nose and mouth and helps to keep the filters in place. You can buy gas masks from top-rated online websites for your needs.

Gas masks work by preventing the harmful gasses from entering your lungs. When you wear a gas mask, the filters will trap most of the particles in the air. The only things that will get into your lungs are small amounts of gas molecules. These small molecules are too small to be caught by the filters, so they end up going into your lungs.

These masks work best when they are properly fitted. If they are not fit properly, the filters can fall off your nose or mouth, or the mask can become leaky. If this happens, gas molecules will enter your lungs and you will be at risk for health problems.

Gas masks have a useful lifespan limited by the absorbent capacity of the filter. Filters cease to provide protection when saturated with hazardous chemicals, and degrade over time even if sealed.

There are a number of different types of gas masks available on the market today. Do some research online and the best gas masks for your needs.