I think we might be onto something with the 'fire' smell... Monday we got a letter in the mail about a town meeting, it was for Monday night and we only got it on the day DP was going to go but we had tea, got the girls dressed and forgot all about it.
That might i could smell smell smell the yuckiness of the smoke again but ignored it, yesterday we were talking about having to sit down and make a fire plan, so i went to bed earlier than DP, woke up thinking he was in bed.. nope not there.. the smell slowly wafted upstairs and i was like OMG is there a fire then i could have SWORN i heard our flat stupid smoke alarm, run downstairs.. no smoke alarm, no smoke no nothing.

didn't mention it to DP he'd think i'm going nuts.. will take note and go and buy new batteries this week....
Thanks mystery man.. now to figure out how to find out who you are!