Thanks for the reply. 6mg is probably not the issue causing the cough, since you were a pack-a-day smoker, unless you were smoking ultra-lights and letting most of them burn in the ashtray. Things to try... Start with a fresh coil (I'd recommend the 1.2 Ohm coil) Start with your Wattage down around 8-10Wa Vape... if it is weak or very cool, bump up the Wattage in small increments... 0.1 - 0.5W Vape... repeat Once you start to get a slight burnt taste, back the Wattage down 0.1-0.5W That is what we call the sweet-spot for that juice and coil combo. There is no set-in-stone rule for X-Wattage, as every device and juice is different, as well as your tolerance levels. Another good trick is to start your intake of a little air before you hit the fire-button, and stop firing before you complete your draw. Another trick is to part your lips a little so you slip-stream a little air along with the vape. If you stopped smoking recently (less than 6 months), I would recommend an even higher Nicotine level and staying with a coil 1.2 Ohms or higher... it will help you through the cravings. 18mg and a 1.5 Ohm coil did the trick for me, and I was nearly a 2-pack-a-day smoker for 30+ years. I'm running 6mg now, and I've been vaping for nearly 18-months.... but nothing says you MUST lower nicotine levels... that's your choice to do so Sub-ohming is not for everyone... so don't feel you have to keep up with the neighbors and only using the 0.2 or 0.5 Ohm coils. Personally, I can't stand anything below 0.8 Ohm... too hot/harsh for my tastes. Lastly... drink LOTS of water... vaping drys you out, and a lot of the cough can simply be caused by a dry throat/mouth. Coffee, tea, beer, cola... not the solution... water is the ONLY way to go!