Old old house. Bedroom stinks of what I can only describe as a sour, sweaty smell when it rains. It hasn’t smelt all summer and now it’s back and I’d forgotton how awful it is. The gable wall has a chimney in it (capped), it’s a granite wall lined with plasterboard so no fireplace - it’s all covered up. The room below which has the main fire place doesn’t smell. There is no major damp, we’ve had it surveyed by damp specialists. We have new windows so no ingress there. Floorboards and carpet seem fine. There is no way to get to the source of the smell - it is in the corner of the room but no wall/area of floor smells particularly strongly. It doesn’t smell musty or earthy or damp. More acidic, like sweat. Our trusted builder has no clue and says we’ll only get to the bottom of it by ripping out the plaster and taking the room back to the granite, but we can’t afford to do any of that right now.
any ideas?!!