hello,,,i recently bought a property which was built around 1900,,,i painted a room out and lifted the carpets and sanded the floorboards so i could live in that room while i renovated the rest of the rooms etc,,,the room i painted out was wall papered and had been used by the previous owner as a smoking room,,,the walls and ceiling were brown as you can imagine,,,ive never seen anything like it,,,as i was in a bit of a hurry to get a room ready i didnt remove the paper and just painted over it in white emulsion,,,anyway ive been getting terrible headaches and sore throats,,,and theres sometimes this sickly sour smell and taste in my throat,,,has anyone else had any experiences like this??? i read somewhere it could be dog wee soaked into the pine boards or could it just be the nicotine chemicals coming through the paper???,,,its only this one room the rest of the house is fine......