An alarm is going off in my apt building, started at 1am now its 2:30am. It's right on the other wall of me so it goes right through to my apartment. It's gone off a lot in the past including almost all day Thursday. The issue, other than it preventing me from sleeping, is that this time it says its the CO alaram. I honestly don't know if I should be calling the fire dept. which would wake the whole building up.