Nitrogen Dioxide has the chemical formula NO2, where N represents nitrogen and O represents oxygen.

Gasoline-powered vehicles are a major source of Nitrogen Dioxide pollution, as they emit NO2 when they burn gasoline.

Nitrogen Dioxide exposure can lead to a number of health effects, including reduced lung function, increased risk of asthma, and eye irritation.

Nitrogen Dioxide contributes to the formation of smog by reacting with sunlight to form ozone, reacting with water vapor to form nitric acid, and reacting with other pollutants to form particulate matter.

Reducing Nitrogen Dioxide pollution requires a combination of measures, such as promoting the use of electric vehicles, improving energy efficiency in buildings, and reducing the use of fossil fuels.