Client concerned with possible sewer smell primarily in the main floor living room. Performed visual inspection of all visible drainage and checked for leaks, dried p-traps, or failed mechanical vents. No signs of any issues. Advised client that they may require a smoke test which TE does not provide. They would have to contact a leak detection company. Client requested we pull and reset the master toilet which is above the living room to eliminate that as a potential source. Pulled and reset the toilet with new wax seal and mounting hardware. Visually inspected the mounting flange and any visible section of drain line for damage. No issues found. Sealed base of the toilet with fresh bead of caulking.