According to research, sensitive individuals may develop dermatitis by coming into contact with nickel leaching from electric kettles. The leaching of metals depends on the kettle's age, type of metal, and manufacturing process. So, it is advisable to use an electric kettle made of stainless steel or enamel-coated steel to avoid exposure to nickel and other metals. So, those are some of the most common FAQs about electric kettles. Now that you know the answers to these questions, you can make an informed decision about which type of electric kettle is best for you.