Smoke bombs are pyrotechnic devices that produce a large amount of coloured smoke. They are often used as a signalling device, or for theatrical or entertainment purposes. Smoke bombs can be made from a variety of materials, but the most common ingredients are potassium nitrate, sugar, and a colouring agent.
Smoke bombs have been used for centuries, and their popularity continues to grow. They are relatively easy to make, and they can be used to create a variety of effects. Smoke bombs can be used to create a thick cloud of smoke that can obscure vision, or they can be used to create a coloured smoke that can be used for signalling or for entertainment purposes.