Smoke is a complex aerosol consisting of tiny particles, gases, and water vapor released when a material undergoes combustion or pyrolysis. Its composition varies greatly depending on the fuel source, the oxygen supply, and the temperature of the fire. Smoke can contain hundreds of different chemicals, including carbon monoxide, particulate matter, and volatile organic compounds (VOCs), many of which are harmful to human health and the environment. Beyond its toxic effects, smoke also reduces visibility, contributes to air pollution, and can play a significant role in cloud formation and weather patterns.