Instruct: Classify a given review as either positive or negative.
Query: Very dangerous

I bought this for my daughter's room.After several months' use, mist did not come. I opend it and check what is the problem.Problem is, it uses small brushless fan to blow mist. once it is broken mist come to fan room and burn fan's motor. I checked out voltage from control board. it was 30V but fan is for 18V. In the view of safety and durablity, it is poor.