Ozone is tryoxygen (oxygen 3 times) or as chemical abbreviation O3. Wikipedia describes it as “pale blue gas with a distinctively pungent smell”.
If you ever experienced storm, you would definitely remember that special fresh smell in the air after it passes. That is because of ozone. It’s levels rising especially after strong storm.
Ozone is important gas and it also main ingredient of Ozone Layer in Earth’s atmosphere.