Wow, funny that both you guys mentioned a 'fog machine'.  Another article noted that they contained propelyne glycol, the liquid used in fog machines.  It's unsure whether it's safe to inhale, but I don't see haunted house workers and concert special effects teams hacking up a lung.  So did you use one that had any flavoring to them or just a straight nicotine?  What brand was it? I was thinking of trying them out. The Blue e-cigarettes have different flavors, wondering if it covered up the nasty taste.