Is There A Safe Level of Secondhand Smoke?
The Surgeon General has concluded that there is no risk-free level of exposure to secondhand smoke. Breathing even a little secondhand smoke can be harmful. While, logically, more extensive or prolonged exposure to secondhand smoke is associated with greatest risk of having medical problems as a result, no safe limit for exposure to secondhand smoke has been established. This means that all exposure to secondhand smoke should be avoided whenever possible.