👉 In the context of chemistry, "fumeuses" refers to a type of gas that is produced when an explosive or incendiary device ignites. Fumeers are often used in fireworks and other explosive devices as they produce a large amount of fumes that can be harmful if not handled carefully. The term "fume" comes from the Latin word "ferum," which means smoke, especially in a combustible substance like gasoline or gunpowder. When an igniting device ign