State Summary We Card No Smoking or Vaping It Is Against the Law To Smoke Sign Seton E cigarette and cigarette sales decline after California law eliminates sale of flavored tobacco U.K. Gov't Report Finds E Cigarettes 'Substantially Less Harmful,' Urges Deregulation Breaking Down the Law: Can You Use E Cigarettes Where Smoking is Prohibited? Aspire Gov. Pritzker signs bill banning e cigarette use inside public spaces : r illinois