My house was an older home that was gutted and rebuilt last year. The only original part is the basement. This week we notices a "garbage-type" odor coming from a downstairs open area that connects the kitchen, living room, entrance to basement (no odor or water leaks in basement), and entrance to bathroom (no odor or water leaks here). We have cleared/cleaned the entire area and seem to think it is coming from the ceiling. The only thing above this location is a staircase and linen closet. Neither have an odor or leaks. There is no rotten food, stagnant water or plants and we don't have a dog. The rug in the livingroom is brand new and I checked this for odor- no dice. Any ideas?
Thanks!