Car Odor of spoiled milk

My wife left a container of milk in the car trunk to spoil, so now the trunk AND the cabin (2000 Buick Century) smell like curdled milk. We tried airing it out, and even sprayed the AIR of the trunk and of the cabin with “Ozium” air sanitizer, but it is not working. What else should we do - use a fabric spray to spray the entire interior surface of the trunk and the cabin? Which spray works best?

Your wife mistakenly left the milk in the trunk and it happened to sour. She didn’t do it on purpose.

Try this:

If all else fails, find a detailer.