Technically, an aerosol is a suspension of fine solid or liquid droplets in a gas. (Contrast with a smoke which is a suspension of solid particles in a gas.) In general conversation, aerosol usually refers to an aerosol spray can or the output of such a can. The term aerosol, derives from the fact that matter "floating" in air is a suspension (a mixture in which solid or liquid or combined solid-liquid particles are suspended in a fluid). To differentiate suspensions from true solutions, the ter… (More on Aerosol)