The aerosol (vapour) created by vaping is not completely harmless. That’s why people who don’t smoke should not take up vaping. However, for people who smoke, switching to vaping is less harmful than smoking.

[There is] general agreement that electronic cigarette use exposes the user to fewer toxicants and at lower levels than smoking cigarettes.

Electronic cigarettes for smoking cessation 2025 | Cochrane Library

In general, people who smoke who switch to vaping can reduce their exposure to a wide range of toxicants.

For more information, check out:

There are safety risks to any electronic device.

Learn about vaping safety

Risks are what might happen, but side effects are the direct results.

Read the side effects of vaping

The health risks associated with long-term vaping are unknown. While vaping is less harmful than smoking it is unlikely to be totally harm free. People who are vaping to quit smoking should plan to stop vaping too.

None of the included studies (short to midterm, up to two years) detected serious adverse events considered possibly related to electronic cigarette (EC) use. However, more long‐term data are needed, and this conclusion relates specifically to people using EC to quit smoking and not to people who have never smoked.

Electronic cigarettes for smoking cessation 2025 | Cochrane Library

Scientists will not be certain for many years of any long-term health risks associated with vaping.

The Ministry of Health has a role in continuing to monitor the risk. If you become aware of any adverse reactions to vaping please report to the New Zealand Pharmacovigilance Centre.

Comparative risks of cardiovascular disease and lung disease have not been quantified but are likely to be also substantially below the risks of smoking.

Electronic Cigarettes for Smoking Cessation, Cochrane Review April 2021

Be aware that some people may not like being around others who are vaping. Some people may find the vapour unpleasant, or are sensitive to it.

Be considerate about where you are vaping, especially indoors and in public spaces that are smokefree. Avoid vaping where there are children and young people nearby. Respect other people when they request that you do not vape.

Risks to others from second-hand vapour are likely to be low. However, it is best to not vape around children and young people. To protect young people from vaping, be open with them about why you are vaping. Explain that these devices are not for people under 18 or people who don’t smoke. Store the vape responsibly and out of the reach of children. Never give a vape to minors.

Vaping is not permitted in all Smokefree indoor workplaces, including restaurants and bars. Business owners can make their own decisions about vaping in the outdoor areas of their workplace.

We need to be aware of people's needs. If someone at work is vaping to quit, find ways to support them while still being considerate to other people who may be sensitive to vapour.