Strong plastic or chemical smell from the coffee maker during brewing, even after several uses.

Safety first: If you smell burning plastic, unplug immediately and do not continue using the appliance.

• Initial cleaning cycles: For new T-fal coffee makers, run 2–3 full cycles with just water and a small amount of vinegar, then rinse with plain water.
• Clean removable parts: Wash the water reservoir, filter basket, and carafe thoroughly with warm, soapy water and rinse well.
• Check for overheating: If the smell is strong and seems like burning, inspect the underside and cord for discoloration or melting. Discontinue use if found.

Persistent strong chemical or burning odors may indicate overheating internal plastic parts or wiring and require professional inspection.