Hello, My child is 4 months old. Since he was almost one month old. His problem of cold and cough continues. I give him steam and nebulise him the saline solution. Almost every week. But he is still having that buzz buzz sound when he breathes. Dnt know if it could be problematic to have cold and cough continued for so long. I have been giving him oil massage everyday. But too worried. please help me what to do Thanks