Despite common belief, sitting far from the smoking section in a restaurant, opening a window, or turning on air-conditioners or fans will not protect you from the serious risks of secondhand smoke.
According to U.S. Surgeon general Richard H. Camonia, M.D., nonsmoking adults exposed to other people's cigarettes at home or work increase their heart disease risks by 25 to 30 percent. Even a brief whiff can create an immediate adverse effect on the heart vascular system.
Avoid any place that isn't a No Smoking space, and ask people not to smoke around you and your family—especially if you have young children. New research links secondhand smoke with SIDS (sudden infant death syndrome).