The term aerosol spray is a fine mist of tiny droplets. Scientist believe that aerosol particles occur naturally throughout the atmosphere including the stratosphere in many different forms. Lay terminology that is synonymous to aerosol is spray can, not with the fine mist of particles that come out of the nozzle. Non scientists are not aware that the term aerosol can also be used to describe nitric acid an sulfuric acid droplets floating many miles above the ground. That is why the more prosaic term spray can may be a better terminology.
In 1970 spray cans were big business in the United States. They were filled with products ranging from hair spray and insecticides to disinfectants and polishes. Many of these cans used compounds known as chlorofluorocarbons, or CFCs to propel the active ingredients out of the can. When the nozzle is pressed the CFSs propellants are rushed out through the tiny hole accompanied by a fine mist of the active ingredient.