It's what? Maybe you want to say "leaking"? I'll just go with that.
I don't know about the 510 connection of your
smok stick but I know other SMOK 510 designs. When an atty is screwed in there may be a gap and
juice or condensate can seep through. You could check by
carefully pressing down on the 510 connection with a slim object. Make 100% sure it's switched off and you don't press the fire button at the same time.