Can Vape Set Off A Smoke Alarm Does Vape Trigger Smoke Alarm Will A Vape Set Can Vape Trigger Smoke Alarm Can Vaping Really Set Off Smoke Alarms? The Truth Revealed 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 rooms. Even lighter vapes can Can your vape activate smoke detectors? Vuse