All materials in contact with water in the device meet food-contact standards, so you can use it with confidence.
For your reference, the detailed explanations are as follows:
1. It is recommended to use purified water because mineral water or other types of mineral-rich water can develop a bitter taste during heating. Additionally, regularly clean the water tank and the area around the tank’s base, and keep the tank dry when not in use. Avoid adding hot water or other liquids to the tank;
2. Sensitivity to odors can vary especially with a new device. To address this, you can perform a cleaning of the dispenser. Fill the water tank with more than 2 liters of purified water and add 30 grams of citric acid cleaning agent. Stir until completely dissolved. Select the Boiled water mode and dispense all the water from the tank. Rinse the tank with clean water, then refill with purified water and dispense 1-2 cups of hot water before discarding.