Can Smoke Alarms Detect Vape Think vapes are harmless to your smoke alarms? Not always. Vapor clouds from ecigarettes can drift into smoke alarms and trigger false alarms, especially in smaller Global Study Warns Youth Vaping is a Gateway to Smoking and Future Lung Cancer Risk roycastle.org Use of e cigarettes after quitting smoking increases lung cancer risk Cancerworld Magazine How Do Vape Detectors Work? [Answered 2026]