It doesn't because the compounds don't make it high enough into the atmosphere in significant concentration. There is a disproved theory that the chlorine ion would be striped off and catalyze the conversion of ozone to oxygen in the upper atmosphere. In the 1970's, environmentalists managed to ban these compounds and still claim they destroy the ozone. It is typical ignorant alarmism. I did support it in the 70's even though I thought it was highly exaggerated. Loss of ozone is a real concern as apposed to a possible maximum couple of degrees of beneficial warming and the great benefit of increased CO2 to life.