Sounds like your atty is dead! Or the battery is. Can you try another atty on the batt or vice versa? No, if there is no vapor there is no nic, unless you are getting it in your mouth from drawing hard..yuck!
Do you have
juice in the cart? If it's dry you need to refill with some
juice.
At first I had to go down the checklist of what may be wrong..
Go try a few things and get back to us. And don't forget to tell us what type of e-cig it is and if you are using prefilled carts or refilling with juice.