What should I do if I smell a burnt smell when using the Xiaomi Water Ionic Hair Dryer H500?

When Xiaomi Water Ionic Hair Dryer H500 smells obviously burnt during use, please turn off the power immediately and do not use it.
The initial judgement is:
1, hair into the hair dryer, resulting in the smell of burning hair;
2, internal parts are damaged, can be dealt with after-sale.