For many smokers, the act of illuminating comes with a nagging a feeling of guilt, especially around non-smokers, children, or even in shared rooms. The well-documented hazards of secondhand smoke are undeniable, related to respiratory infections, asthma, sometimes more serious long-term health concerns in people that inhale it. https://charliejbri60370.wikifordummies.com/9120024/clearing_the_air_can_personal_air_filters_protect_others_from_secondhand_smoke