What actually causes the smell
Odor lives in three places: the carpet padding under the visible fibers, the foam inside the seat cushions, and the cabin air filter. Surface cleaning reaches none of them. That is why a car can look spotless and still smell like a wet towel two days after a cleaning.
Hot-water extraction is the fix. We inject heated solution into the fiber, agitate it so it releases the soil and the organic material feeding the odor, then pull the majority of the moisture back out under vacuum. The goal is a carpet that is damp, not soaked — leaving water behind in this climate makes the problem worse, not better.