Vaping and e cigarettes London Fire Brigade Batteries and items containing batteries including reusable vapes are a fire risk and should NOT be placed in any litter or household bin Shops who sell these items should 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 Households warned over common vape mistake that can cause 'ferocious' toxic fires that are nearly impossible to put out