For many smokers, the act of smoking cigarettes comes with a nagging feeling 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 those who inhale it. https://charliejbri60370.wikifordummies.com/9120024/clearing_the_air_can_personal_air_filters_protect_others_from_secondhand_smoke