Is it normal to be able to smell paint and other chemicals through the party walls between two buildings? Last January, the brownstone to our east had a sewer line pipe break in the basement and it flooded their basement and first floor. The smell was terrible and migrated into the halls of our building and into some of our shareholder's apts all the way up to the sixth floor. For the past six months we have endured a barrage of smells from mold killing chemicals are worried about the fact that this is even happening. How can we ensure no damage has been done to our wall in the course of their repairing their problem and what course of action should we take? We can't even find the address of the owner listed on the NYC DOB site. Thanks.