The friend mmseng was talking about it was me. I was handling this stuff without really thinking about it, and would definitely agree with mmseng's idea of a posted safety notice.
I had vaped lightly three times on this specific day over several hours. I was refilling and got maybe two drops on my fingers, a drop on my hand, and a couple or so on my arm. I didn't think anything of it and wiped it all off on my pants. It only took about three minutes for me to realize something was wrong. Symptoms included a feeling of coldness in the extremities, extreme muscle tension all over to the point of shaking a bit, underarm sweat and clammy hands, slight headache, and most of all I was extremely hyper and anxious. Seemed to last 4+ hours.
I was positive it was the liquid, but just to be sure I preformed a pseudo-scientific experiment consisting of dropping three drops of the 24mg/ml solution onto my inner wrist and rubbing. This effect was the same and much more intense. It took effect in about 30 seconds rather than three minutes and I was forced to wash it off.
I have smoked heavily for the last 4 years and am quite used to nicotine, but this was something else.
Point is, this stuff should be handled with care.