What did the soldiers do to protect themselves from gas attacks World War 1?

During World War I, soldiers protected themselves from gas attacks by using gas masks, which were designed to filter out toxic chemicals. They also employed techniques such as staying low to the ground to avoid inhaling gas that lingered at higher levels. Additionally, soldiers learned to quickly respond to gas alarms and seek shelter in trenches or designated safe areas. Some units even experimented with improvised barriers and smoke screens to minimize exposure to enemy gas.