Hmm. If it was the traps, I would think your sims would actually have to mess with them to have anything happen to them.
I bet this is going to come down to one specific debug item. Have you got any jungle archways on the lot? The ones that, in the jungle, you have to hack through the vines to get to a new area. That's the next culprit I would look for.
It's going to end up being one item, that, if it's present, this lot is the jungle. Because it's there, "You're in the jungle, baby! You're gonna die!"