This is a pretty interesting rabbit hole, and it seems like if his inventions harmed others at least they harmed him as well!
> in 1944, he was found strangled to death by a device he devised to allow him to get out of bed unassisted. It is often reported that he had been accidentally killed by his own invention, but his death was declared by the coroner to be a suicide.
If actually suicide, perhaps he felt remorse? Elsewhere in the wiki page:
> Midgley "had more adverse impact on the atmosphere than any other single organism in Earth's history",[32] and Bill Bryson remarked that Midgley possessed "an instinct for the regrettable that was almost uncanny".[33] Fred Pearce, writing for New Scientist, described Midgley as a "one-man environmental disaster".[34]
What a legacy, hope the patents were worth it.