I'd recommend purchasing an ozone generator and ozonating the house/room if possible. Forever ozone makes an affordable residential unit for 80 bucks.
Make sure you have a couple extension cords (it's dangerous to breathe) so you can activate it from outside the house/room, and run it for the amount of time described in the instructions to eliminate bedbugs, and your problem should be solved.
I have no relation to that company, other than having bought a couple of their generators to deal with a mold and mildew smell issue in a garage and a room in my house, where they worked quite well.
I haven't ever needed them for bed bugs personally, but from what I've read it should be able to exterminate every bug in a room after about 10 hours per room (though it may not kill every egg if they're in an odd spot that the gas can't get to).
When I used one in a bedroom, I didn't notice much if any leakage from the room with the door closed, and it dissipated after a couple hours of being off.
I would hate to recommend this and have it potentially not work considering your situation, so you may want to try other solutions first before going down on this route.