If it's the nautilus did you underfill it?
These tanks rely a lot on a vacuum to hold the fluid in the tank. If you underfill it takes a while to build up that vacuum, and while this is happening the juice will run quite freely into the atomizer.
A point of interest:
It's a 5 ml tank. I've found the measurement scale printed on the tank is way off. By measuring 5ml with a syringe into the tank I found there was just enough room to get the base back on without squirting fluid everywhere. Left only a small bubble at the top of the tank.