There is no such thing as a mantle of O3O3 in the atmosphere, it is more prudent to call it ozonosphere. Ozone is produced by electrical discharges, you can relate to its smell if you leave an electrical motor spinning for some time or after thunderstorms. But mostly it is produced by ultraviolet light hitting OxigenOxygen (O2O2)! You see, that is the O2O2 that protects humans from ultraviolet light and ozone will be produced more whenever light from the sun contacts oxigenoxygen. On the other hand, if you are actually worried about ozone per se, jets fly at the altitude of ozonosphere where the ratio of Ozone to OxigenOxygen gas is higher. These jets consume tonnes of Ozone to burn querosene in their engines in flight. Other free radicals can also react with ozone, but it is itself a free radical, and it can react with itself on certain energy levels. Cheers.