Fog is a cloud of smoke, air pollution is one. Which is stored in air pollution due to the phenomenon of climate change. The pollution is caused by burning coal, oil is also caused by the interaction of light with nitrogen oxides and volatile organic compounds.
As a mist that arose for the first time at London, England, and occur several times. Sometimes the cause is killed and get thousands of ill people.
people are ill with the disease, inflammation of the nose cavity. Bronchitis. Diagnosis, including pets.