@leaderreborn big spoilerino, this is from the web novel's view, and since this is a light novel adaptations some things might be different, but here is how I interpreted the web novel part:
BIIIG spoilerino:
@Ironclad yea, In fact, they can completely be without toxins if they're bread under certain conditions.
I remember reading something about it while trying to figure out a certain sentence in the manga...
@Xunder if you're talking about this:
then it was intentional (cuz I honestly don't have any better font for this).
If not and I'm just blind, then please tell me which one