Vape Detectors and Sensors: Everything You Need to Know Vapes and Smoke Alarms What You Need to Know The Tech Behind Vape Detectors and How They're Keeping Schools Safe False positives in vape detectors are a common concern, particularly when the devices are placed in environments with factors that can mimic vaping aerosols., , Common causes include:, Aerosols Vape Detectors in Schools: How Do They Work?