Sure, it can be odiferous, and the results can be stinky, but if you REALLY want SERIOUS TOXIC (but insanely tasty!), try this:
"...the odor of stinky tofu is said to resemble that of rotten garbage or manure, even by its enthusiasts..." -- and I will vouch for that. First time I smelled it I thought I'd stumbled into the back of a Philadelphia garbage truck in August... but it tastes great if you can get it past your nose.
Anyway, compared to that, Kimchi is MILD....