i vaped for almost 8 months successfully. but a lot of stress along with a pocket full of batteries in the washer/Dryer catastrophe, i started smoking again. now months later i am really trying to vape again and every time i try i cough my ... off and my throat burns! can juice go bad after a few months? it looks no different. also the carts i have do the same thing. i use V4L carts (empties and pre filled). i dont get it. when i started the vapor was always smooth and easy to inhale, like a cig. i smoke Newports so it cant be that the nic is to high. anyone have similar experiences?