Sounds like the building has other more serious plumbing issues. Gasses and odors of any type shouldn’t be able to work their way back into a building via the sewer pipes. The pipes in the building can’t leak and that’s one of the reasons why properly installed drains have traps.
Code inspectors often use the “peppermint test” to test all the above. They dump concentrated peppermint oil into the sewer then go around the building and see if you can smell it. If you can then you have problems with the plumbing.
Buildings having issues likely have bad plumbing and thus their occupants were likely breathing sewer gasses for ages... the “liner fumes” just made all this more obvious.
Code inspectors often use the “peppermint test” to test all the above. They dump concentrated peppermint oil into the sewer then go around the building and see if you can smell it. If you can then you have problems with the plumbing.
Buildings having issues likely have bad plumbing and thus their occupants were likely breathing sewer gasses for ages... the “liner fumes” just made all this more obvious.