Disposable vapes to be banned for children's health

The government are going to legislate to ban disposable vapes, seemingly on the grounds that they are largely responsible for a rise in children vaping. However, is this good economics? Do bans ever work? Certainly Prohibition in the United States wasn't a success and libertarians will simply argue that it will push people into unregulated markets worsening outcomes.

It seems that even the government isn't convinced by its own argument though; the adding of the rider that they should also be banned because of the negative externalities associated with their disposal suggest that they're trying to convince you by weight of argument rather than reasoning.