The World Health Organization has been so interest with the issue of chocolate cigarettes that it suggested a total ban on their sale.

Health researchers observed that chocolate cigarettes became the biggest selling sweets among children. Anti-smoking campaigners fear that if the cigarettes are passed on to youngsters or if children see adults smoking them, it will tempt them into trying them.

Sheila Duffy, director of information and communications at ASH Scotland said she was disappointed to hear of the return of chocolate cigarettes and advised parents not to allow their children smoke sweet cigarettes.

She added: "While sweetie cigarettes look like harmless fun, research shows that children playing with them are more likely to go on to experiment with real cigarettes. Tobacco is highly addictive and lethal. We need to keep these products well away from children."

In fact, where there's smoke, there's danger. Researchers from the National Institute of Drug Abuse (NIDA) reported that smoke sweet cigarettes is no safer - and may be more dangerous - than that of conventional cigarettes.

An analysis of the volunteers' blood revealed that nicotine levels were significantly higher after they smoked chocolate cigarettes than after ordinary cigarettes. In some cases, the levels of exhaled carbon monoxide were higher too. "Kids think they're not smoking real cigarettes. Some even think they've stopped smoking if they use these alternatives. But these cigarettes are delivering highly toxic compounds," said Wallace Pickworth, a pharmacologist.

Teens think that sweet cigarettes are less substantial and therefore less noxious.

Anti-smoking researchers said that tobacconists add new flavors to their deadly products in order to improve their taste, and also to attract more smokers to buy it. But they didn’t understand that these kinds of cigarettes are bought by children too, because children like chocolate and sweets.

Health Minister Nicola Roxon said she was disturbed about the development and would talk to the states about tackling the problem.

"While smoking rates are dropping, sweet cigarettes open up a dangerous new avenue to attract children to smoking," she said.

The anti-smoking lobbying group Action on Smoking and Health (ASH) said that chocolate cigarettes encourage children to smoke.

"Adding sweets to tobacco is appalling. It shows that we need more tobacco regulation to prevent anything being added that could make tobacco more attractive, or smoother, or easier to use," said Deborah Arnott, director of ASH.

Health researchers mentioned that should ban on sweeteners and flavorings that are added to cigarettes which are known to make them taste better and make cigarettes easier to smoke.