Tobacco and cannabis smoke leave behind sticky residue and odor particles that cling to fabric, carpet, leather, and air vents
"Nicotine content of electronic cigarettes, its release in vapour and its consistency across batches: regulatory implications" (PDF)
Regular tobacco cigarette smoke contain 7,000 chemicals, many of which are toxic
Also, you can feel that something is stuck in your throat or a sensation of a lump-like substance in your throat
An estimated 42 percent of adults identified themselves as smokers in 1965, and advertisements for cigarettes were impossible to avoid
A personal monitoring study to assess workplace exposure to environmental tobacco smoke