well, you proved it is possible, because it happened to you. it sounds like a combination of heavy metal poisoning, carbon monoxide poisoning and nicotene poisoning. Carbon monoxide, nitrogen oxides, hydrogen cyanide and ammonia are all present in cigarette smoke. Forty-three known carcinogens are in mainstream smoke, sidestream smoke, or both. if you look up the symptoms of the various poisons, i think you will find all yours. if you have mercury fillings or nickel crowns or root canals, it can intensify and prolong symptoms. chelation is only good if you don't have anything toxic in your mouth.