Fire is very hot. A person should never touch fire, because fire may burn anything that gets too close. If human skin touches fire, the skin may burn, which can take some time to heal and to remove the scar. If a fire gives off a large amount of smoke, a person's mouth should be covered with a wet cloth, since people can faint when they breathe in too much smoke. Even a spark, such as from a cigarette, should be kept away from any fuels that very easily catch and spread fire, like gasoline, or cause an explosion, like gunpowder. 