An aerosol is a suspension of tiny solid particles or liquid droplets in a gas, often air. Common examples include mist, fog, and spray from products like deodorants or air fresheners. Aerosols can be natural, such as sea spray or volcanic ash, or man-made, like those found in spray cans. Aerosols play a significant role in the environment and climate. They can influence weather patterns and air quality. Some aerosols, like black carbon, can warm the atmosphere, while others, like sulfate aerosols, can cool it by reflecting sunlight away from the Earth.