Because the smoking of tobacco and the inhalation of environmental tobacco smoke (ETS) are dangers to human health and the most prevalent cause of preventable death, disease, and disability, as well as are annoyances, inconveniences, discomforts and general health hazards to those who are involuntarily exposed to such, and in order to serve the public health, safety and welfare, the declared purpose of this chapter is to protect people from dangerous, unnecessary and/or involuntary health risks by prohibiting the smoking of tobacco or any other plant on or in any municipally owned buildings. (2006 Code)