FM200 fire suppression is found as an active compound as a propellant in medical inhalers. This is goes without saying that FM200 gas is extremely safe for occupied spaces with the correct fire suppression design.There is a common misconception that FM200 gas reduces oxygen this is not true! FM200 is a synthetic/chemical fire suppression gas and extinguishes a fire by removing the free radicals or heat elements from the fire triangle. (Oxygen, Heat and Fuel).