I live in a 1920's house. Everyday around 12:30 there is some sort of chemical/ plastic smell coming from the basement ceiling. I t last about an hour. I open up the windows to air it out faster. The smell seems to come through the wood floors to the 1st and 2nd floors of the house. It has been 2 weeks now. I have no gas in the house and had the oil company come out to make sure the furnace was fine. It is driving me crazy,