Well my TCH has 18,000 miles on it. I have the tan cloth seats and there is a bad chemical animal like smell that I can't stand anymore, it's like an old car that has vinyl and has been baked in the sun. Get's worse when the heat is on, they tried flushing out the A/C and replacing the filter, but it's more like the fabric has the smell. It's not like a dead animal would smell either and has been here since I bought the car. I have contacted Toyota about a Buy back, what else can be done? Would leather seats help? Anymore suggestions?

 

Try this

 

Have you tried Febreeze? That stuff does wonders!

 

an animal might have found it's way into your car.
A member here posted (about a year ago) his experience trying to find and rid the car of a decaying mouse.
it's possible

 

"..worse when heat is on.."

See the EED at airsept.com

Google:

wwest " dirty gym socks" -dfg