Hi, My Wife Ran The Self Clean Oven Cycle And

Hi, my wife ran the self clean oven cycle and then cleaned it with oven cleaner because she thought it was still dirty. There is a white residue in the oven and I have even seen some flakes come off of it. Today I decided to bake some cookies. The oven doesn't smell but the flakes scared me. Not enough to not eat the cookies but enough to make me worry. Am I in any danger from eating these?