Customer states that guest smelled sewer smell in upstairs room and thinks toilet might need to be reset. After inspection PPS has flushed toilet multiple times and inspected base and found no sign of leaks around toilet. Customer states that room had not been used for months prior to guest smelling Oder. PPS has come to the idea that p traps in room dried up allowing sewer gas to seep in. Once room bathroom was used p traps filled stopping sewer gas from passing.