Grad students are remarkably hard to kill. Deprive them of sleep, food, and water. Expose them to high radiation levels and dangerous chemicals. They even survive brief periods of vacuum. Grad students are like academic tardigrades.
Despite the macabre tone of this comment, this is one of those rhetorically famous criticisms of cold fusion so don't discount it because it seems sensationalist or something... Seriously why has no one died from radiological causes from cold fusion study?