As I noted in another remark from someone, we also

As I noted in another remark from someone, we also do have a strong odor (metallic-like) coming out of one of our units shortly after it was turned on. It was thoroughly cleaned so I know it is not because it is dirty. The smell bothered my daughter so much - she has bronchitis and asthma - that i had to remove it from her room. The strong smell is a concern to me. Please advise as to what the problem is.