For many smokers, the act of lighting up comes with a nagging a feeling of guilt, especially around non-smokers, children, or in shared rooms. The well-documented risks of secondhand smoke are undeniable, linked to respiratory infections, asthma, sometimes more serious long-term health problems in people that inhale it. https://pad.geolab.space/9U5B6hebTE2hinJH87VHKw/