Passive smoking is the inhalation of tobacco smoke, called passive smoke, secondhand smoke or environmental tobacco smoke, by individuals other than the active smoker.
Secondhand smoke exposure occurs when people breathe in smoke that has been breathed out by those who smoke and use other tobacco products. Secondhand smoke can cause coronary heart disease, stroke and lung cancer in adults who do not smoke or use tobacco products
Secondhand smoke exposure causes multiple diseases in children, including asthma and pneumonia, and results in thousands of avoidable hospitalizations. Secondhand smoke exposure is a major cause of sudden infant death syndrome and may cause lung cancer and heart attacks with repeated exposure.
Secondhand smoke causes sudden infant death syndrome (SIDS)
Infants exposed to secondhand smoke after birth are more likely to die from sudden infant death syndrome (SIDS) than infants who are not exposed to smoke from burning commercial tobacco products
After five minutes: Arteries become less flexible, just like they do in a person who's smoking a cigarette. After 20-30 minutes: Blood starts clotting, and fat deposits in blood vessels increase your risk of heart attack and stroke.