Vital Signs: Disparities in Nonsmokers’ Exposure to Secondhand Smoke — United States, 1999–2012. February 3, 2015 / 64 (Early Release);1-7 “No level of secondhand smoke (SHS) exposure is safe. SHS exposure occurs when nonsmokers breathe in smoke exhaled by smokers or from burning tobacco products. It kills more than 400 infants and 41,000 adult nonsmokers… Continue Reading