Hmm empty coolant tank and smoke coming in the vents. Not sure as to the smoke coming in he vents but sounds to me it was way overly hot. Kinda wonder if it blew a head gasket, and the smell was from antifreeze on the manifold or dripping down to the flexpipe behind the engine. Which would cause the smoke. It is possible to have a leak but not be able to find it, only leaks while it has compression. After it cooled down would it start at all?
Do one thing every day that scares you. -Eleanor Roosevelt