What could go wrong?
https://en.wikipedia.org/wiki/Spontaneous_human_combustion
“Spontaneous human combustion” refers to the death from a fire originating without an apparent external source of ignition; a belief that the fire starts within the body of the victim. This idea and the term “spontaneous human combustion” were both first proposed in 1746 by Paul Rolli, a Fellow of the Royal Society, in an article published in the Philosophical Transactions concerning the mysterious death of Countess Cornelia Zangheri Bandi.[2] Writing in The British Medical Journal in 1938, coroner Gavin Thurston describes the phenomenon as having “apparently attracted the attention not only of the medical profession but of the non-medical professionals one hundred years ago” (referring to a fictional account published in 1834 in the Frederick Marryat cycle).[3] In his 1995 book Ablaze!, Larry E. Arnold, a director of ParaScience International, wrote that there had been about 200 cited reports of spontaneous human combustion worldwide over a period of around 300 years.[4]
“What could go wrong?”
Ever read the short story by Stephen King, “Thinner”?