Better yet, it was discovered by locals instead of rich Westerners riding in on their white horse to save the poor little brown people.
In case you’re wondering, no, you can’t do this with glass bottles because glass is opaque to UV light. (Which is why you can ride in a car without getting a sunburn.)
This would be a good technique to tuck away in your mental “just in case” file. If the fecal matter ever does impact the ventilation impeller, you could save lives by remembering that you can sterilize water with a transparent plastic bottle and a sheet of aluminum foil.