is there fiberglass in smokeless tobacco menthol cigarettes Is There Fiberglass in Chewing Tobacco? A Myth Explored Dipping tobacco - Wikipedia

Although its impossible to live your life without being exposed to some carcinogens, smoking is the greatest avoidable risk factor for carcinogen exposure

A meta-analysis of asbestos and lung cancer: Is better quality exposure assessment associated with steeper slopes of the exposure-response relationships

Cannabis has different odors depending on when it is being smoked

Most notably, they found that exposure to an airborne pollutant called PM2.5 (aka fine particulate matter) promotes the growth of cells in the lungs which carry cancer-causing mutations. Essentially, as someones lungs breathe in excessive amounts of PM2.5 simply by being outside in polluted areas potentially-cancerous cells are more likely to grow in the lungs, leading to lung cancer