Was in Vegas this weekend having a good time... randomly met a guy in one of the casinos. he saw that i was vaping, and gave me a serious warning about cardiac arrest. he said it had something to with the nicotine in the liquid form... he handed me his business card, and i notice he has a phd and mba. he told me he's some type of crazy scientist doctor guy... has any one heard of this or is he just bull shi#@ing???