Research is needed to assess how e-cigarette marketing could impact initiation and use of traditional cigarettes, particularly among young people." E-cigarettes have not been proven to be a safe method for stopping smoking, said Miranda Spitznagle, director of Tobacco Prevention and Cessation Commission at the Indiana State Department of Health
Keeping the bite clean and treating it with anti-itch creams and the like should suffice, but if you experience an allergic-type reaction, including hives and wheezing, seek medical attention
"Trends in tobacco smoking and consequences on health in France." Preventive medicine 27.4 (1998): 514-519
If you're sharing the lighter at a party or using it constantly throughout the day, that window shrinks to a few days
Kinematograph Weekly
And then there's the cost - a basic plasma lighter can run you $10 to $25, which is a lot more than a disposable lighter that you can get for under a buck