In most places where smoking is on the decline, lung cancer rates are dropping. Environmental pollutants are also a major concern, though, and since Nick86 seems to be laser-focused on Malaysia they seem to have some major pollution issues, both domestic and blown in from Indonesia.
Smoking doesn't guarantee lung cancer, but it massively raises the odds. Some dice aren't worth rolling, in my opinion.
Pure nicotine on its own isn't directly considered a carcinogen, but its addictive properties in cancer-forming habits like smoking or chewing tobacco certainly don't help. On top of all that nicotine seems to cause damage to DNA, which more often leads to cancerous genetic mutations. I'd be careful with pure nicotine either way.
Thank you for coming to my nicoTED talk.