There are no records in history of anyone dying from the active ingredient in marijuana which is THC. Smoking itself is harmful and could probably kill you just cause smoking itself is harmful. You can get around this by using a vaporizer or by eating marjuana in a snack or food after preparing the marijuana by frying it in some kind of fat like butter. You can take insane amounts of THC these days by consuming butane hash oil made from good weed and no you won't die unless there impurities in the hash oil or worst case scenario you will have a bad trip and get a panic attack but you probably won't die. You are.more.likely.to die from coffee than from marijuana, but even that scenario is quite unlikely.