For the past couple mornings my master bathroom I have smelled smoke in it? I have no idea why? Then last night It was at least 1am. I am half asleep. I smell the smoke. Then I swear I hear drilling and jack hammering. This morning I was washing my hands there was a lot of water and soap in my sink and a small spongue comes up through the sink. Now sometimes on the weekends the smell is so bad I can't stand to be in my house. I have smelled on one side then the other. It is really odd? Now I work at home, one day I saw one of my neighbors get a PVC pipe delivered I was thinking what is he doing with that stuff? Where do I go from here? Sounds like I need a plumber? My house is one story solid foundation.