Just received my kit, vaping as i write. 
I would hope that whoever invented this got the nobel, or an equivalent.
I find I'm a deep inhaler, is there any limit to how long you inhale?
Also, there is a little crackling sound, wheni inhale, is this normal?

I would hope that whoever invented this got the nobel, or an equivalent.

I find I'm a deep inhaler, is there any limit to how long you inhale?
Also, there is a little crackling sound, wheni inhale, is this normal?