Why not just be prepared for that eventuality? In this case, having an extended auto warranty was a godsend.
Strange odors in the car can indicate other problems such as water leaks.
To make matters worse, the dealer is usually pushes the importance of extended warranty with alarming force, causing a client to ask why.
If they can not conclusively establish the causal link, the dealer will reimburse you and fix or replace the failed component.
California Lemon Law is a condition that you should not have to use your vehicle for at least 30 days (not necessarily consecutive) before you can qualify.
Depending on what the owner of the car is looking, additional services are often available as add-ons.