Carbon monoxide takes two lives on the north side despite a working detector in home.
77 year-old Rasheeda Akhter and 18-year-old Zanib Ahmed both died at Swedish Covenant Hospital about three hours apart Sunday.
Two other women and five children ranging in age from 5 to 12, all from the same family and living in the same building were hospitalized with similar CO poisoning symptoms.
Firefighters checked the building’s co detectors and found them to be in good working order.
Now questions are focusing on those detectors, just like the ones in most houses.
WGN’s Tom Negovan has more.