Bread-Bakers v108.n038.9

Highest heat possible in the oven, no bread on it, windows open, 
smoke alarm off, and let it go until it stops.

Have read someplace that a self-cleaning cycle will also do it, 
if  your oven can do that.

--diane in los angeles
http://www.well.com/user/debunix/recipes/WholeBaking.html
http://www.well.com/user/debunix/recipes/FoodPages.html