A multi-modal air quality sensor stack-- PM, VOC

https://www.scribd.com/document/1005174552/How-Vape-Alarms-Assist-Implement-No-Smoking-and-No-Vaping-Real-Estate-Policies-232206

A multi-modal air quality sensor stack-- PM, VOC, and nicotine-- offers an extensive profile of indoor contaminants for informed decisions.