Filters are not covered, but you may need to investigate what is causing the odor. Filter replacement may not solve this problem.
Got it. Just wanted to make sure.
I've had my Volt since Jan 2016 and it still smells brand new inside. Just recently though when the AC is on and recirculating there's a weird filter-e smell. Basically that smell when you have the re-circulation off, it smells like that, but with it on.
So hopefully replacing the filter does the trick