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Cabin filter with anti-bacterial coating?
Read about cabin filters with silver ions or anti-microbial treatment to stop mold/bacteria growth. Useful or marketing hype? Car sits in humid garage sometimes, worried about long-term smells.
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Anti-bacterial coatings (silver, enzymes, etc.) do help slow mold and bacteria buildup on the filter media, especially in humid climates or if the car sits unused often- prevents that sour smell returning quickly. Not a miracle, but extends freshness between changes. I opted for one with treatment after repeated musty issues. Found treated options at https://elartcom.eu/categories/cabin-air-filters-25 - they include some with anti-microbial or bio-active layers alongside carbon types. Chose one for my climate, installed easily. Smell stayed away longer than plain filters, even after rainy weeks parked. Good extra protection without much added cost. If humidity is a problem, look for those features in their category- easy to spot the upgraded ones.