PM2.5 Concentrations in a Cannabis Store with On-Site Consumption

PM2.5 PM2.5 concentrations in outdoor air were estimated using data from a U.S. Environmental Protection Agency monitoring station located 2.5km 2.5km (1.5 mi 1.5 mi ) from the dispensary in an area with similar ambient pollution sources. The room was served by the building heating, ventilation, and air conditioning (HVAC) system and by four window air conditioners that did not admit fresh air. In healthy nonsmokers, even 30 min of exposure to cigarette smoke, at concentrations of