Like so many other smokers, Hong Kong-based Chan did not savor his addiction.
Two years ago, on his 30th birthday, Chan started using a device that heats tobacco – instead of burning it – to release a nicotine-laced vapor
"I wanted to stop smoking but I was not quite ready to quit nicotine yet," he says. "I saw this as a bridging device to do something less harmful than cigarettes … There is no ash, no smell and my lungs and my breathing feel better when I use it."
But today that industry is facing a battle. While many smokers are embracing alternative devices in an attempt to quit cigarettes, governments around the world are divided.
This month, the Hong Kong government announced plans to push ahead with a controversial blanket ban on all e-cigarettes and heat-not-burn products
This month, the Hong Kong government announced plans to push ahead with a controversial blanket ban on all e-cigarettes and heat-not-burn products. , anyone who imports, makes, sells or promotes new smoking products could face six months in jail or a HK $ 50,000 ($ 6,370) fine
Chan says that law will make him choose between becoming a criminal or doing something that's worse for his health.
"This is either going to send people back to smoking real cigarettes or drive the whole underground industry to a black market," he says. The first e-puff
Today, the United States is the world's largest e-cigarette and heat-not-burn market, worth $ 5.1 billion last year, followed by Japan and the United Kingdom, according to Euromonitor.
So are the products a pathway to giving up smoking, or just an alternative gateway to nicotine?
"These products are being marketed as trendy products to attract young people who do not already smoke," said Antonio Choshing Kwong, chairman of the Hong Kong Council on Smoking and Health, which lobbied the government for the proposed ban.
"The smoking prevalence for children in Hong Kong is 2.5%. With a rate that low, anything that would attract youngsters is dangerous."
A spokesperson for the Hong Kong Food and Health Bureau said it considered all alternative smoking products "and a gateway to the eventual consumption of conventional cigarettes," and noted that "all these new smoking products are harmful to health and produce second-hand smoke."
Under the ban, citizens can smoke their current supplies at home. But, once these out, buying alternative smoking products will pose a legal challenge.
The great vape debate
The world is divided over e-cigarettes.
Currently, 39 jurisdictions have outlawed the products outright, including Brazil, United Arab Emirates and Thailand. In Canada and Australia, e-cigarettes containing nicotine are legal to buy – although such products are rare. The UK and US have ruled the sale to adults is legal.
Legislation and regulation has been slow to catch up with the industry as new products such as heat-not-burn devices, including the Iqos produced by tobacco giant Philip Morris, have entered the market.
Iqos technology is different from the e-cigarettes conceived in Shenzhen. "The Hong Kong legislation has wrapped everything into one: e-cigarettes and heat-not-burn , but the government has to understand the difference between what the two are and how they could regulate them, "says Brett Cooper, general manager of Hong Kong and Macau for Philip Morris
In Japan, where 34% of people still smoke , nicotine e-cigarettes have been banned – but Iqos is legal and a runaway success
"One in five people have switched from cigarettes to these alternative products in Japan," says Cooper, noting that Iqos accounts for 15 % of the tobacco market in Japan, where 3 million people use the device.  With the new legislation, Hong Kong is showing that it is opposed to "innovation, technology and emerging science," Cooper added.
Nav Lalji has a difficult job. He is the president of the Asian Vape Association, a group formed in 2015 to unite vapers in the region. However, it has become a defensive body, as Singapore, Thailand, Malaysia and Japan have all outlawed e-cigarettes
Lalji believes the ban in Hong Kong is simply going to turn smokers of e-cigarettes and heat-not- burn products into criminals
"The thing is we are located in Hong Kong which right next to Shenzhen, the hub and heartland of manufacturing e-cigarettes," says Lalji, adding that the Chinese mega-city makes 95% of the world's e-cigarette supply.
"So if anyone in Hong Kong can not afford them legally, they could simply go across the border to China to pick them up or order online."
others, the proposed law threatens to move Hong Kong into nanny state territory.
"The ban goes against a few values that I hold dear: freedom of choice as a consumer and freedom to gain access to less harmful products", says Brice L, and a French expat living in Hong Kong who asked that CNN did not use his last name due to the legal sensitivities surrounding e-cigarettes.
"Overall, it feels like the Hong Kong government is going backwards – and I do not understand the reasoning behind it."