Ozone is found in the upper atmosphere and at ground level.  While the upper atmospheric ozone protects the earth from the sun’s harmful rays, ground level ozone is the main component of smog.  Ozone is not just found in big cities but can be transported long distances so even rural areas can experience high ozone levels.
Ozone is a very dangerous gas that can cause damage to lung tissue.  Even relatively low levels of ozone can cause health effects.  Breathing ozone can trigger a variety of health problems including, coughing, chest pains, and throat irritation.  It can worsen emphysema, asthma, and bronchitis.  Emissions from industrial facilities and electric utilities, motor vehicle exhaust, gasoline vapors, and chemical solvents are some of the major sources. 
The Aireox air purifier's abundant Activated Carbon/Purafil media bed will effectively remove ozone from the environment.