I replicated igzy's actions, nevertheless the odor reemerges after some time.
The one option I have identified is to reiterate this as necessary.
I often use the air conditioning with the recirculation feature on. I reside in a non-humid region (Los Angeles, CA).
It occurs mostly when the weather has been warm and I return to the vehicle after its parking. It is comprehensible, since all that condensation is being confined in a certain location.
The odor is most pronounced when the air conditioning is off, the fans are operational, and the recirculation is disabled, allowing fresh air to enter. When the air conditioning is operational, the odor fades rapidly; nevertheless, it reemerges after the AC is deactivated and the outside vents are opened.
I have also attempted to deactivate the air conditioning and open the vents when I am around 10 minutes from concluding my journey. This was ineffective, so I have discontinued it and will manage till I spray the evaporator.