An unusual smell of water often indicates problems with the pipeline. In this case, it is worth contacting professionals who conduct Video Inspection to identify possible damage. If the smell is caused by pipe corrosion
https://bens.plumbing/services/sewer-line-repair/shared-side/ , Pipe Lining will help, which restores the internal walls of the pipes. If the smell does not disappear, it may require a check of the water supply system by a specialist.