This "fine" has gone from "$10000", to "$750" (I believe Stao/Hypergear was the one to cop this fine) to now $15000.
I wouldn't be surprised if it were nothing more than a defect notice at this rate.
Also, OP - just run it SO LEAN that the engine won't even fire up. Then you'll never have any exhaust gas passing through the system, and therefore no smell!