Fire is the heat and light energy released during a chemical reaction, in particular a combustion reaction. Depending on the substances alight, and any impurities outside, the color of the flame and the fire's intensity might vary. Fire in its most common form can result in conflagration, and has the potential to cause physical damage through burning. Fires in buildings and transportation systems are a threat to human lives and also to buildings and cultural heritage. In a fire inferno, most of the victims die due to late detection of the fire and consequent inhalation of toxic smoke gases. In addition to the human consequences, the economic and cultural loss is significant