I would have stuck my head in the oven a long time ago.
I just learned a couple of years ago, why sticking one’s head in an oven doesn’t seem to happen much any more. It has to do with the gas the oven uses. A hundred years ago, the gas was coal gas which is naturally high in CO. So if you stuck your head in the oven and turned it on (this was in the days when you had to use a match to light the oven) you’d quickly be done in by the carbon monoxide in the coal gas. Even rescuers could be affected by it.
Natural gas has so much less CO, that it just won’t do the job.