U.S. Department of Health and Human Services / Office on Smoking and Health / Department of Health / National Center for Chronic Disease Prevention and Health Promotion / Coordinating Center for Health Promotion / Centers for Disease Control and Prevention / / /
Secondhand Smoke Secondhand smoke (SHS) is the combination of smoke from the burning end of a cigarette, cigar or pipe tip and the smoke exhaled by the smoker. SHS is harmful to the health of everyone who comes in contac