smoking cigarettes causes emphysema in which the alveoli burst is one of many ways can damage your lungs, but it is not just a lung issue! Smoking-related lung damage strains the cardiovascular system, increasing heart disease The Difference Between Healthy Lungs
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Quit smoking pot entirely
So if the government isnt going to make a habit that is a massive public health risk illegal (and I think the drug war shows why that might be a bad idea), the least it can do is strongly discourage the habit

For example, cigarette warnings have been required in the U.S

Annual Review of Biochemistry 46:765795

You can just use whatever local term for cigarette thats appropriate

Keep your vape switched off or locked in your hand luggage throughout the flight
