Lung Cancer Myths : Myth-Only smokers are at risk for lung cancer?

Joannne Mortimer-PLEASE DELETE (Medical Oncologist) gives expert video advice on: Myth-Living in a polluted city is a greater risk for lung cancer than smoking a pack of cigarettes a day? | Myth-Only smokers are at risk for lung cancer? | Myth-If you smoke, the damage is done, so there's no point in quitting? and more...