I badly screwed up my cast iron pan by frying shredded meat with lots of blood (Korean BBQ).
However, I converted all non-metal stuff to pure carbon ash by heating the pan to 750 F with my 25 year old electric range. At this heat it was very uncomfortable to keep a flat palm hovering one foot over the pan for any period of time. But it cleared up very nicely after some smoke that I extracted with a dedicated kitchen fan. The ash was scraped off like dust. I wouldn't do this without an exhaust under any circumstances though.
However, I converted all non-metal stuff to pure carbon ash by heating the pan to 750 F with my 25 year old electric range. At this heat it was very uncomfortable to keep a flat palm hovering one foot over the pan for any period of time. But it cleared up very nicely after some smoke that I extracted with a dedicated kitchen fan. The ash was scraped off like dust. I wouldn't do this without an exhaust under any circumstances though.