I'd be VERY hesitant to use an O3 generator for such a purpose. Ozone can damage certain plastics pretty easily. I wouldn't want to find out the hard way if the interior has such plastics.

Fixing the problem is easy:

1) Unscrew the radiator cap
2) Park a new car under it
3) Tighten the cap.

Sorry about that, I just had to.....

I'd try detaching the webbing and washing it by hand in the sink, assuming that's the only affected area. It probably isn't. There are products out there that will supposedly neutralize the odor, using an enzyme?

-tp