i just started smoking these a few days ago in an effort to hopefully give up smoking totally in a few months (slowly dropping to the cartridges with 0 nicotine). the one odd thing ive noticed though is that they have an after taste like a hit from an empty crack pipe and its making me mental. i havent done any drugs in almost 7 years now, and these damn things are making me jones like a mofo for it. im literally having trouble sleeping now. oh well thats my story and i feel better i told someone somewhere.