For many smokers, the act of lighting up comes with a nagging sense of guilt, especially around non-smokers, children, or perhaps in shared areas. The well-documented risks of secondhand smoke are undeniable, associated with respiratory infections, asthma, and much more serious long-term health problems in people who inhale it. https://squareblogs.net/helensled5/clearing-the-air-can-personal-air-filters-protect-others-from-secondhand