My question to the professionals on this site is 'How do you control vaping on board an aircraft when clearly the smoke sensors in the toilets do not register the output from an e cigarette?'
Are e cigarettes a health risk, I personally am not happy to be around a user, whether it is indoors or outside and I am very upset when a passenger in the next seat decides to do it!!
Probably best only to fly on aircraft that have single-seater toilets, then ...