environmental tobacco smoke is the same as secondhand smoke Passive smoking Secondhand Smoke: MedlinePlus

By 1979, the magnitude of the epidemiological, pathological, clinical, and experimental evidence had grown to the point that the Surgeon Generals Report concluded: Smoking is causally related to coronary heart disease in the common sense of that idea and for the purposes of preventive medicine. The Health Consequences of SmokingCardiovascular Disease: A Report of the Surgeon General

I think most of us were thinking it was going to be someone within the hitting staff, (04:35): within the hitting department

Hazardous substances found in cigarette butts include arsenic, lead, nicotine and formaldehyde

People first used chew and snuff in the 17th and 18th centuries