I followed these steps, but just so happened to check on my mason jar 3-4 days in and saw tiny carbonation bubbles rapidly rising throughout.

I thought that may just be part of the process but double checked with a Google search on day 7 (when there were no bubbles in the container at all).

Turns out I had just grew a botulism culture and garlic in olive oil specifically is a fairly common way to grow this bio-toxins.

Had I not checked on it 3-4 days in I'd have been none the wiser and would have Darwinned my entire family.

Prompt with care and never trust AI dear people...