Secondhand smoke can be harmful in many ways. For instance, it affects the heart and blood vessels, increasing the risk of heart attack and stroke in non-smokers. Some studies have linked SHS to mental and emotional changes, too. For instance, some studies have shown that exposure to SHS is linked to symptoms of depression. More research is needed to better understand the link between SHS and mental health.
Get sick more often
Have more lung infections (like bronchitis and pneumonia)
Are more likely to cough, wheeze, and have shortness of breath
Get more ear infections