According to The New York Times "... air pollution claimed seven million lives around the world in 2012, according to figures released Tuesday by the World Health Organization ..."
According to the same organization, WHO, smoking was responsible for five million deaths worldwide in 2012.
7 million deaths versus 5 million deaths. Thus, air pollution is more deadly than smoking.
Air pollution can be caused by carbon dioxide (CO2), a byproduct of people breathing. According to the EPA, "Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities. In 2011, CO2 accounted for about 84% of all U.S. greenhouse gas emissions from human activities". CO2 causes air pollution.
Breathing causes air pollution.
Air pollution is more deadly than smoking. That being the case,
Before the government passes laws to ban smoking it should pass laws to ban breathing!