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The government strongly advised to discontinue use of e-cigarettes in liquid form rather than at the beginning of the year or cigarettes.

Suspected lung disease cases continue to come out, more details, reporter Nam Joo-hyun reports.

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Liquid e-cigarettes generate a lot of water vapor and have a low smell.

[Liquid e-cigarette users: many people do not like the smell. That's why I think it's a boom.]

Carcinogens were known to be less popular than conventional cigarettes, but recently, the possibility of lung disease was raised, raising safety concerns.

In the United States, there were 1,479 cases of lung damage associated with liquid e-cigarettes and 33 deaths. Recently, there was one suspected lung injury in Korea.

The government, which called for refrain from using liquid e-cigarettes last month, said it has stopped using it.

There is no ground for legal regulation as it has not yet been proven hazardous, but it is actually a warning "no use".

[Park, Aung-Hoo / Ministry of Health and Welfare: We will complete the analysis of harmful components by November, and carry out the human risk research promptly, and establish a scientific basis for prohibiting the collection and sale of products.]

Liquid e-cigarettes, in particular, have been cited as the main culprit for the expansion of youth smoking.

The government prohibits the addition of fragrance substances step by step and tightens customs clearance of nicotine liquids such as overseas fastball.

[Park Yujin / Chairman of the Korean Society for Smoking cessation: Put a new taste and go home. It's actually aimed at teens, like incense. Our country doesn't manage it properly.]

E-cigarette company Jullabs Korea says it does not contain THC and vitamin E acetate, which are problematic in the United States.

(Video coverage: Kim Won-bae, Jo Jung-young, Video editing: Hwan-hee)