There are a number of things that you can do to address this.
First and foremost, we need to start with changing the cabin air filter.
This is located in the glove box on this vehicle also here is a guide that will help with doing this:
https://www.2carpros.com/articles/how-to-change-an-air-cabin-filter
Next, we need to clean the evaporator and heater core and make sure there is no mold on them as they normally get a growth on them and then when the air is blown over them then pick that up and put the smell into the cabin.
Please run through the info below and let me know what questions you have, and we can go from there.
Thanks
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Friday, December 3rd, 2021 AT 3:22 PM