I know people can die of heroin overdoses and coke overdoses but can they die of a crack overdose? Or smoke some dodgy crack like you can with coke laced in something lethal!!
As I understand it, Crack Cocain is just a purer form or cocain and therefore much more dangerous so yes there should be no problems with overdosing on it. Actually the most likely effect would be a massive heart attack.
I'd say crack is pretty lethal so lacing it with something else, well that might increase the likelyhood of dying yep.