Carbon Monoxide

Jeremy shut the flue too soon last night with some wood still in the fireplace. We were made aware of the situation when Kate knocked on our door at 2 AM asking about the beeping and do we have extra smoke detectors in the basement? We had purchased the CO detector after Christmas and put it in the basement, so I guess it works. Nobody was hurt, we just opened the flue and some windows and moved Jeremy and Kate upstairs. The house smells smokey now, but it will clear up with some dusting and cleaning.