Deutsch: Smog / Español: Smog / Português: Smog / Français: Smog / Italiano: Smog /
A smog is a dense, discolored radiation fog containing large quanities of soot, ash, and gaseous pollutants such as sulfur dioxide and carbon dioxide, responsible for human respiratory ailments.
Most industrialized nations have implemented legislation to promote the use of smokeless fuel and reduce emission of toxic gases into the atmosphere.