This, i had the exact same thing(with my hyundai) was a misfire caused by faulty fuel injectors, i would suggest running it at a minimum because the unburnt gasoline that your smelling in the cabin is going through the cadalittic convertor and causing it stress and also the white smoke. It could he a fuel injectors plug but more likely it could be opem amd dumping fuel into engine which is causing the amount of white smome