And I'll caution on the use of ozone: it's an oxidizer, just like bleach (chlorine)/bromine. If left too long, it will fade fabrics, make vinyl/plastics brittle (including the insulation on wiring) and rust iron/corrode aluminum. I would use it as a last resort.
I agree with cleaning hard surfaces, (but would use a good detergent instead of bleach); wash anything that can go in a clothes washer; febreeze anything that can't - and open it up and blast a fan for several days if possible. The fan and fresh air offer "dilution". This is what we do when we get a used car that has funky smells....LOL!