Horrible smell ground floor kitchen
I recently moved into a 2 story duplex and am experiencing a horrible smell emanating from the ground floor kitchen area. At first I thought it might be a dead rodent in the walls, but after three months the smell seems to be getting stronger. Could it be sewer gases backing up through the floor drain or ground floor bathroom. It also appears that the ground floor bathtub is horizontal and I am wondering if there is an S pipe or P pipe somewhere? Would the absence of either of these pipes cause gas backups? Should I contact the landlord for a plumber visit?