A smoke machine is a device that produces a thick vapor resembling smoke, often used in entertainment settings like theaters, concerts, and dance clubs. It works by heating a special fluid, usually a mixture of water and glycol or glycerin, which creates a fog-like effect when vaporized. This effect enhances lighting and creates an atmospheric environment. Smoke machines can also be used for practical purposes, such as in fire drills or safety training, to simulate smoke without the dangers of real fire. They are commonly found in film production, haunted houses, and theme parks to create immersive experiences.