What Is IQOS, and How Is It Different from Vaping or Smoking? Recent Federal and State Actions to Limit Flavored Tobacco Products ASTHO IQOS: How Does It Work and Where Can You Find One? Vaping360 Vaping: How E cigs Work (Infographic) Live Science Don't Go Up in Smoke: E Cigarette Safety Electrical Safety Foundation International E cigarettes can produce more formaldehyde than regular cigarettes, study says Los Angeles Times