In air or another gas, an aerosol is a suspension of tiny solid particles or liquid droplets. Natural or manmade aerosols can exist. Fog and mist, dust, woodland exudates, and geyser steam are example...

In air or another gas, an aerosol is a suspension of tiny solid particles or liquid droplets. Natural or manmade aerosols can exist. Fog and mist, dust, woodland exudates, and geyser steam are examples of natural aerosols. Smoke and particle air pollution are examples of anthropogenic aerosols..