Toilets are connected to vent pipes, which connect with outside air. These allow for gravity to work properly in flushing a toilet and they keep swamp gasses out of your house. They can also be an emergency source of air...
https://www.neatorama.com/2023/04/09/A-Patent-for-Getting-Fresh-Air-from-a-Sewer-Pipe/If you've ever eaten asparagus and soon noticed a terrible smell when you urinate, you can blame asparagusic acid. That's the simple explanation, but there's a lot more to it. Dr. Daniel Whitehead is a chemistry professo...
https://www.neatorama.com/2023/04/09/The-Curious-Phenomenon-of-Asparagus-Pee-Smell/In the late 13th century, the town of Dunwich in Suffolk, UK, was as big as London, with about 10,000 residents. It was near the North Sea, not quite on the shore, but then the shore moved. Dunwich had eighteen stone chu...
https://www.neatorama.com/2023/04/09/The-City-That-Fell-Into-the-Sea/
