''The designation...places secondhand smoke in the same category as the poisons arsenic and benzene.''
''[Tobacco] smoke contains hundreds of harmful compounds, including carcinogens. Each year, California smokers put into the environment 40 tons of nicotine, 365 tons of small particles of pollution and 1,900 tons of carbon monoxide.''
This is a pretty big development with large implications for tobacco control policy.
A similar article on this development is on the Monsters and Critics website.