Maybe that's it, psyc63, though for the life of me I don't see why vapor makes me start coughing the instant the smallest amount hits my lungs while cig smoke doesn't...other than the size of vapor molecules vs. analogue smoke. That said, I loaded up with Tribeca today and while I still couldn't inhale it without coughing, it tastes so darned good that didn't matter too much to me. Today I cut down to 1/3 of my normal volume of analogues. Trying to taper them off over the next couple of weeks leading into the new year.