what is photochemical smog and why is it a problem
These 10 animal facts will amaze you. Photochemical smog is a unique type of air pollution which is caused by reactions between sunlight and pollutants like hydrocarbons and nitrogen dioxide.Although photochemical smog is often invisible, it can be extremely harmful, leading to irritations of the respiratory tract and eyes.actory pollution can contribute to photochemical smog. Sunlight breaks down combustion components to create smog. Ozone can irritate the respiratory passages and lead to serious medial problems in cases of prolonged exposure. Some measures have been taken around the world to reduce photochemical smog.