I did look into the 1918 “Spanish flu” but couldn’t find a fabulous smoking gun. A couple of things to consider is that it predominately affected healthy younger men but not the children and elderly, which is the opposite of what most “flu” are expected to do. People often died rapidly, turning blue, and it apparently appeared all over the world at a time when there wasn’t rapid international travel. This doesn’t seem to fit with the “electrification” theory. It fits, perhaps, with the experimental vaccines they were pushing everywhere, although I didn’t find strong supporting evidence. And never underestimate medical “error” (large doses of aspirin – how much was being given?) as a significant factor.