How do gas masks work? How does the mask differentiate breathable air from poison gas?

Question

Don’t we inhale huge amounts of poison when breathing through the gas mask?

In: 3

Answer 1

gas mask has a filtrate paper that remove toxic particle from the poison gas.
You have to deal with wearing it for long period of time if you work as a hazmat worker, and since it a government job, you get paid by government instead of boss.