First versions of actual gas mask were heavier and bulkier which prohibits performance on battlefield
Changes
Gas Masks Before, During, and After WW1
Garrett Morgan
Garrett Augustus Morgan first created the respiratory hood (a.k.a. gas mask) in 1914
He first used his invention successfully in 1916
World War 1
The Germans first used poison gas on the western front
Troops were first equipped with cotton mouth pads
One of the first British gas masks was the British Hypo helmet
A more sophisticated version of the gas mask was developed later when poison attacks continued; this new mask was called he British small respirator box
British Hypo helmet
Now
Many modern gas masks advertise extremely efficient filters, chemical coatings, and multiple layered filtering systems.
Most military-issued gas masks provide protection, however, some others are overpriced, aren't airtight, break easily, or don't provide the protection needed.
Poison gas attacks in war aren't nearly as effective due to numerous advances in gas mask technology
