For many smokers, the act of lighting up comes with a nagging a sense guilt, especially around non-smokers, children, or even in shared rooms. The well-documented perils associated with secondhand smoke are undeniable, associated with respiratory infections, asthma, and much more serious long-term health issues in those who inhale it. https://pagh-ulrich-2.federatedjournals.com/clearing-the-air-can-personal-air-filters-protect-others-from-secondhand-smoke