Comment 1:

https://dlf-ne.org/why-your-house-smells-like-sewage-and-what-to-do-about-it-straightforward-tests-and-fixes/

Comment 1: Ugh, I totally get this! I ignored the gurgling noises under my kitchen sink for about two months, thinking it was just a weird quirk. One day, it finally backed up and flooded the cabinets. Had to replace the whole plumbing under there