IIRC right at the beginning of COVID there was speculation it could be spread by air discharge from sewer stack vent pipes; that later turned out to be very lik

IIRC right at the beginning of COVID there was speculation it could be spread by air discharge from sewer stack vent pipes; that later turned out to be very likely but no one wanted to talk about "airborne" at that time. "We" as beings are at least as much the micro biome that inhabits and surrounds us as we are ourselves. Sharing those pools of semi-independent life with each other; letting them taste the world we live in and adapt to the locale we're in today, is probably more important than we want to recognize. Closing the lid when you flush may well be a fundamentally uncivil act.