We hear about diesel being bad, but can someone point me to a person that has died from diesel fumes – and I mean has actually died from diesel fumes, and not ‘diesel fumes may have contributed to the death of this person’? Can you kill yourself with diesel fumes? Yes, but it would take a while. Can you kill yourself with petrol fumes? Yes, in minutes. So which is the most dangerous: one that may harm you or one that will kill you?