Does anyone here experience a heavy feel and a choke/cough when vaping bubblegum/menthol flavored juice? I'm only vaping for almost week though, not sure if it's the flavor or if my lungs is still adjusting to it. But the heavy feel and choking goes away after I vape it like 4-5 puffs. I used to smoke Marlboro Reds, what e-juice can you guys recommend me?