yes in the one of the wars the could throw a bomb or" poisonous gas" into the trenches of their opponents and kill them.
chlorine
Yes, carbon monoxide is a poisonous and very dangerous gas.
Poison gas is any of the various gases with either poisonous or corrosive nature
no
Poisonous carbon monoxide gas has been found in the atmosphere of the dwarf planet Pluto
Poisonous gases....hahahaha....ah shii!
The bluish poisonous gas which is a type of allotrope of oxygen is named "ozone".
Chlorine, which was used as a poisonous gas in World War I.
tear gas
Yes.
Mustard gas was a poisonous gas used.
Chlorine is a greenish-yellow poisonous gas commonly used for disinfection and bleaching.