Fortunately, the fire department arrived within minutes, and put out the fire. According to the building's caretaker, there was only surface damage, so the structure is still sound. I guess we were lucky, seeing as the fire didn't spread to any other apartments. I've often wondered what I'd do if there was a fire (I'm paranoid that way...), and at least those reactions kicked in when I grabbed my stuff. I still would've been heartbroken at the loss of a lot of things had the apartment caught fire, though. -__-
In the end, we got back inside around 5 AM. I'd inhaled a lot of smoke, so felt rather ill, and being unable to get back to sleep I ended up calling into work and taking the day off. I feel guilty for doing so, since we're short-handed and I'm certain this put a lot more work on my co-workers... but given my own condition, I didn't really feel up to facing that kind of stress on top of what I was already suffering from.
Ah well... I'm gonna head out in a bit to get some fresh air (I suspect hanging around the apartment isn't helping me feel any better), and hopefully will feel better within a day or two.