Aerosol are suspensions of propellants and active ingredients such as paint or pesticides.
When the nozzle is pressed, pressure is released and the propellant quickly returns to its gaseous state, spraying into the air with product. Hazards associated with aerosols vary. Some aerosols contain toxic materials, others contain corrosive chemicals. Aerosol-propelled particles are small and are easily absorbed into the lungs and bloodstream. The ozone layer provides a protective shield against harmful radiation.