When I cleaned my oven using the self-clean, I saw smoke.
Do not attempt service or replace parts of the appliance unless referred to in the owner's manual. Follow all safety precautions provided in the owner's manual.
A small amount of smoke is normal when cleaning. Excessive smoke may indicate too much food residue has been left in the oven. Wipe up large spills before self-cleaning. The oven should be cleaned before it gets too dirty.