I have been vaping for a month with a pod kit (voopoo argus air) using pnp coil .8 ohm for MTL. I was smoking for more than 10 years and I want to quit but everytime I vape I feel a tightness on my chest and it induces me to cough. When I am smoking an analog it is so smooth I don't even cough. I really want to quit smoking but with this unpleasant experience on vaping it is hard to leave smoking. My juice is a salt nic with 24mg/ml nicotine strength.