To want to bloody scream....!!

Tell them no more vaping in the house and if they do they will lose money/tech. Then next time you smell it , punish them remove phone/console for say 3 days. Then continue everytime. Search room and bin anything you find. Don’t argue, you are the adult your house, your rules.

Unplug the WiFi and end their phone contract.

Just to play devil's advocate... Stinks of what? It's not just teen body spray smell is it? Cus that fucking stinks to high heaven too (and lingers much longer than vape smell) . I don't know why we allow that either. All the Impulse I used as a teen definitely widened the hole in the ozone layer.

What age teen are you talking about?

Because if they are old enough to leave home then that's what I would be asking them to do: they are not only putting their own health in danger, they are damaging the health of everyone else in the household. Not to mention wasting money and making life horrible with the disgusting sickening smell.

If they aren't old enough to leave home then as pp said you need to sanction them in any way possible.

I find it hard to comprehend living with a son/ daughter who holds their parent in such contempt.

If they don't care, I doubt you'll be able to say anything to persuade them. They'll just keep vaping when you're not looking.

You could try giving them some nicotine gum to have in the house. Nicotine is very addictive - literally no one is going to quit it cold turkey because you personally think they should. People have to want to quit an addiction.

Confiscate the vapes and consequences. Stop pocket money if they're spending it on vapes. Take tech away, no lifts to meet friends etc