Where does “botulinum” come from?

I need to work through this chain carefully, but I notice there's a significant problem with the etymology provided. The chain given appears to be corrupted or incorrectly assembled: - It lists "Latin botulus" as the newest form - Then jumps to Proto-Indo-European roots (gʷet-, gū-) - Then includes Ancient Greek suffixes (-ισμός, -μός) - Then a PIE suffix (-mós) This sequence doesn't form a coherent etymological path. Additionally, "botulinum" (as in *Clostridium botulinum*) derives from Latin *botulus* (sausage), which is straightforward, but the chain provided doesn't support creating a meaningful one-sentence etymology for "botulinum" that follows the stated rules. The chain appears to conflate botulinum's ancestry with unrelated material, possibly from a different entry.

botulinum (English): An anaerobic soil bacterium, "Clostridium...