Plumber Job in San Antonio, Texas

Hi! We have an untraceable odor in one part if the house that we believe is coming from the jack and Jill bath between two bedrooms. It is especially noticeable after showers. Have tried just about everything (flushing drains with bleach, checking vent pipes, flush out, mold, etc). Now looking for someone that might take on the task of finding the source of the smell but def want someone that will snake the pipes w a camera.