I was always under the impression that canola oil was mildly poisonous. It is sort of true in that it has euric acid but far below levels that can hurt you. I think I was confusing things with an event where industrial rapeseed oil in spain was sold as olive oil in the 80s and many people were poisoned.

Also, TIL that canola is a portmandeu of canada and oil.

All the above reference here https://en.wikipedia.org/wiki/Rapeseed_oil