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Long-term experience with rapid air filtration (6 to 15 air changes per hour) in a K-5 elementary school using HEPA and Do-It-Yourself (DIY) air purifiers during the COVID-19 pandemic

Similarly, aerosol inhalation can result in enhanced airway resistance [45] and increased sympathetic nervous system activity [46], factors contributing to elevated risk for the development of cardiopulmonary disorders [10, 47]

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Unlike smoking, vaping produces a subtle and pleasant odour that dissipates very quickly

Scollo, "Review of the quality of studies on the economic effects of smoke-free policies on the hospitality industry," Tobacco Control, vol