Smoke devices are tools designed to produce smoke for various purposes, including signaling, training, and entertainment. Common types include smoke bombs, smoke grenades, and smoke machines. These devices often use chemicals that create a dense cloud of smoke when ignited or heated, making them useful in military exercises, theatrical performances, and special effects. In addition to their practical applications, smoke devices are also popular in photography and film, where they can enhance visual storytelling. Safety precautions are essential when using smoke devices, as they can pose fire hazards or cause respiratory issues if not handled properly.