Smog and Industrial Pollution

Photo chemical smog contains large amounts of (ozone) and other irritating gases. It’s the irritating gases that cause the discomfort a person feels when smog is present. These irritating gases also bring on or aggravate respiratory problems.
Smog is thought to be found only in major cities but can be transported by the wind so that even rural areas can experience high ozone levels. It is a type of air pollution derived from vehicular emission from internal combustion engines and industrial fumes.