I was thinking more of the paranoia than the memory loss when I suggested CO detectors, but my own memory loss might be embellishing the original thread with things that weren't there
Yeah, memory loss and personality changes are both symptoms - so being paranoid fits there... it doesn't help the original person was writing themselves notes, forgetting they did it and then waking up wondering WTF is this??
I'm pretty sure I've managed to do something late night and wake up to it thinking the same (and as far as I know I dont have CO build up lol)