Oven emits smoke or burning smell during normal cooking (not first-time use or self-clean).

Safety first: If you see heavy smoke or flames, turn off the oven and breaker immediately. Keep the door closed if there is a small fire inside.

Step-by-step checks:

• Visual inspection: After cooling, inspect the elements, oven floor, and walls for burnt-on food or grease.
• Remove liners: Remove any foil or aftermarket liners that may be blocking vents or touching elements.
• Clean cavity: Use a non-abrasive oven cleaner or the oven's built-in cleaning function (if available) to remove residues.
• Inspect wiring: If the smell is electrical (sharp, chemical), inspect wiring and insulation behind the oven for signs of overheating or melting.

When to replace parts: Replace any burnt wiring or damaged insulation. If an element is coated with burnt material that cannot be cleaned, replace the heating element.