Updated: Feb 8
The Ozone Layer protects us from ultraviolet radiation from the Sun. Contrary to popular belief, CO2 does not actually affect the ozone layer directly. It actually does different things depending on the altitude and latitude.
In the poles and upper stratosphere, it speeds up the production of ozone. But near the equator and lower stratosphere, it slows the production of ozone. The real culprits are CFCs and HCFCs. These are used in refrigeration, air conditioning, foam blowing, aerosols, and fire suppression. An alternative for CFCs and HCFCs in air conditioning are HCFs