Smoking, Vaping, and Secondhand Smoke Clearing the Air: Understanding the Risks of Smoking and Vaping Whether someone smokes traditional cigarettes or uses e-cigarettes, each inhalation introduces a complex mixture of chemicals into the body. Many of these substances are known to negatively impact cardiovascular health, lung tissue, and cellular function. According to established public health data, cigarette smoke contains over 7,000 chemicals. At least 250 are known to be h