Aerosols refer to a suspension of tiny liquid or solid particles in air or gas. Common synonyms for this term include mist, spray, fumes, vapor, smoke, fog, haze, and smog. Mist, spray, and fumes usually refer to small liquid particles suspended in the air. Vapor, smoke, and fog are used when the suspended particles are gas or vapor, and haze and smog typically refer to airborne pollutants that are harmful to health and the environment. The use of aerosols in various industries has been a cause for concern due to their potential effects on climate change and air pollution.