Nicotine is poison in sufficent concentration, but handle it safely and don't be scared of the
juice.
The amont of
juice in a cart is minimal, even at high (30mg - 36mg/mL) nic levels,
is not strong enough to cause most people any issues.
You'll find some of your carts and cartos will leak at times, (overfilled, bad seal...)
a few drops on your hands is only bad in that it's sticky.
What not to do....I was sitting happy refilling some carts, 3mL sample bottles for travel,
and had 10mL bottles of 30mg open with the drip tips off. I was carefully screwing
on all the child-proof top to keep from spilling. My mistake, dripping at the same time
as filling, , took a 10mL bottle unscrewed the top and without the drip tip on the bottle
dumped it into my atty, and on my hands, down my forearms.......
My first thought was "how am I going to get it back in the bottle!"
It then dawned on me to wash it off, (slow learner),
upside was I didn't crave an
analog or
vaping for a couple hours..... but no ill effects.