"Does anyone know what a fomite is?" my boss asked his room full of new teachers. No one did. "It's an inanimate object that transmits disease from one person to another. Like students' homework. Moral: don't eat Cheetos while grading your students papers."
History would prove him absolutely right. The causality soon became clear. Cheetos = death by fomite.
I thought about fomites when I was in Vegas. God only knows where these people's hands had been. I wondered if there's a more toxic fomite in the world than a Vegas slot machine. Perhaps the doorknob on a strip club entrance.