Do you remember the horrible incident in California years ago (actually, about 20 years ago) where a group of Boy Scouts used oleander twigs to grill hotdogs and marshmallows over a campfire? Several of the boys and one of the Scoutmasters died as a result.
I would never plant oleander. It’s a beautiful plant, but it is really, really toxic.
Some years ago in VA, a guy cut down a bunch of poisen ivy and burned it.
The smoke killed him.
That’s a bit of an overreaction. How about just not eating it?