De'Longhi humidifier has a strong plastic or chemical smell when new or after storage.

Safety first: Use in a well-ventilated area initially.

Step-by-step:

• 1. Rinse tank and base: Wash the water tank and any removable parts with warm water and mild detergent. Rinse thoroughly.
• 2. Air out the unit: Run the humidifier with clean water in a well-ventilated room for several hours to dissipate odors.
• 3. Avoid scented additives: Do not add perfumes or essential oils unless the model is specifically designed for them, as they can worsen odors and damage plastics.
• 4. Persistent strong odor: If a burning or electrical smell is present, stop using the unit and have it inspected for electrical faults.