The definition of a gaseous fire is a type of fire that is fueled by a gas, such as natural gas, propane, or butane. Gaseous fires are usually caused by a malfunctioning gas appliance, such as a furnace, stove, or water heater. Gaseous fires can also be caused by a gas leak in the home or by a gas explosion. Gaseous fires can be particularly dangerous because they can spread quickly and produce large amounts of smoke and toxic gases. In addition, the fire can reach temperatures of up to 1000 degrees Celsius, making it difficult to extinguish. To prevent gaseous fires, it is important to have gas appliances inspected regularly and to check for gas leaks in the home. If a gaseous fire does occur, it is important to evacuate the area immediately and call the fire department.