I live in an appartment building (about 7 years old) and I experience extremely bad sewer smell entering the appartment from the air conditioner fresh air vent, usually at night. My first concern is whether or not this is a health hazard. My next question is there anyone who can test the air and present a case to the body corporate to have the problem fixed. I have been on the roof and to my amazement the roof is surrounded by a 9 ft wall and all the expelled air vents and the air intakes are all at floor level along with the sewer vents about 3 ft from floor level. I find it hard to beleive that the job could ever have been approved. Even standing on the roof during the day with a slight breeze I cant stand the stench. Is there a statutary body I can contact for help, not the council, they are not sympathetic at all. Thanks in advance.