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== Secondhand Smoke == ...over 4,000 compounds, more than 40 of which are known to cause [[cancer]] in humans or animals and many of which are strong irritants.

...', is a term used to describe the smoke that is exhaled by smokers and the smoke that is released from burning tobacco products, such as cigarettes, cigars, ...r, and smoke exhaled by the smoker. It is often referred to as "secondhand smoke".

...type of ear infection can occur in one or both ears and is most common in children. ...s the outer ear and ear canal. It typically occurs when water gets trapped in the ear, allowing bacteria or fungi to grow.