text: Any gas in too high of a concentration is deadly. Too much oxygen is bad for you too. A lightning bolt creates many times more ozone than the EPA says is dangerous to your health. The biggest lie about ozone is that it is pollution. Ozone destroys polution through oxidation. It is also created when the light from the sun interacts with our atmosphere. If a city is poluted the sun hitting our environment creates more ozone to deal with the polution. There are many good uses for ozone as long as you don't get too much of it. I have constantly been breathing ozone created by machine now for over two years. I have not had an allergy since. If you're getting too much ozone it smells like bleach and starts to irritate your nose and lungs. What may be too much for some may not even register to others.