Highly oxidizing, very reactive gas with inecchatic odor. It focuses on the stratosphere and provides protection against life-threatening UV radiation. Ozone present at ground level acts as a component of "photochemical smog". It is formed by a reaction involving in particular nitrogen oxides and volatile organic compounds.
Effects on health
Soil ozone concentration causes respiratory tract irritation and eye irritation. High concentrations of ozone can cause reduced respiratory function.
Effects on the environment
It is responsible for damage to vegetation by atrophy of some tree species in urban areas.