Quote Originally Posted by LiquidOC
It probably contains Butane, I have a few that also produce the green flame, it actually comes from a small ball of metal near the top of the flame output thing that heats up and releases something that turns the flame green. I don't use it for anything, I used to use it when I smoked cigarettes, and it didn't seem any different from any other lighter.
The green flame is because the "small ball of metal" is copper.
Throw it inna trash and don't get that kind anymore.