A new study shows Ottawa patios have high levels of second-hand smoke, which could be hurting your health.

The study, commissioned by the Ottawa Council on Smoking and Health, is based on research from the University of Waterloo that used a hidden device to measure air quality on restaurant patios in Ottawa.

Researcher Ryan Kennedy found levels of tobacco smoke on Ottawa patios were as high as pollutants recorded in the air during a major forest fire.

Ottawa's smoking and health council is launching an awareness campaign aimed at convincing restaurants and bars to go smoke-free on their patios.

Although smoking is banned inside Ottawa restaurants and bars, the rules do not extend to patios.