Intoxication by mustard gas

If you ever smelled something like garlic or.. even fried onions, most likely you were already being affected by it. Every soldier in that war got to flavor its deadly taste. Unknown British soldier during an interview in 1926

The Mustard gas, also known as Agent Yellow, Schwefel-LOST, simply LOST, or Sulfur Mustard is a chemical compound with severe effects on the respiratory system as well as skin and eyes of individuals affected by it. It was first mass-produced by the Imperial German Army during World War One as a response to French chemical attacks.
The chemical, sometimes perceived as a gas, is not vaporized, but dispersed as a fine mist of liquid droplets, giving the aspect of a gas.

They committed atrocities, but we very much did too. The Geneva Protocols must be updated, protected, and most importantly, unanimously accepted. Iberian soldier at a press conference, 1921

Since World War I, mustard agent has been used in several wars or other conflicts, usually against people who cannot retaliate in kind. It is considered to have been the most prominent chemical weapon to ever be deployed during an armed conflict, being also the one with the most studies related to it, and possibly having taken the lives of thousands of soldiers during WW1.
Some information about the horrors committed with this chemical has been publically released by governments all around the globe, with experts calculating an amount of not less than four million people dying as a direct consequence of the weapon, and 12 million ever being exposed to it.

Treatment

Tests made during the years following World War 2 would lead to the discovery that effects on the lungs of individuals affected by the compund were, for all effects, unreversible. Soldiers affected by the substance during WW1 would later in life show signs of lung and skin cancer, as well as many of them eventually passing away due to respiratory or even dugestive problems, all linked to the substance.

Credits:
Top image: 640px-Australian_infantry_small_box_respirators_Ypres_1917 - Militaryhistorynow.com

Top: British soldiers during World War One

Type

Chemical Compound