Homicide: bad word. It means killing another human being. Germicide? For many, good word. It promises to kill what are hated and feared most in this super-sanitary era: germs. Germ is sort of a catchall that refers to any microorganism we can't actually see. That's sort of like referring to every non-human living thing as an animal: elephants, mosquitoes, salmon, vultures. Fact is, there are only a few bad actors [...]