Well, indeed, I know well (as a microbiologist back in the day) that diseased dead bodies must be handled safely to prevent contagion spread. But I was under the impression (rightly or wrongly) that some people believe that any dead body could be diseased just from being dead; it was this idea that I was thinking of. Sorry, I should have been more clear. I have amended the earlier post.
Bugs Bunny: "I speak softly, but I carry a big stick."
Yosemite Sam: "Oh yeah? Well I speak LOUD! and I carry a BIGGER stick! and I use it, too!" BAM!