This is nothing I've ever smelled before either :-\ It's like a mix of burning rubber and something else just as bad.
... it's not going away either. FFS. How am I going to get to sleep tonight? It smells just as bad upstairs.
Oh well. I just logged in to say that, so right now I'm going to watch at least one more episode of the Drew Carey Show, and cross my fingers that this problem clears itself up.