Can Car Air Conditioning Filters Block Viruses?

[AryaDella]

Yes, but it primarily depends on the filtration efficiency of the car's air conditioning filter. A car is a relatively enclosed and independent space, forming a barrier compared to open outdoor public areas. However, it is not completely sealed. Even with doors and windows locked, air can still enter the cabin through the car's air conditioning system. Here are relevant details: 1. Air Conditioning Filter: The air conditioning filter ensures tight contact with the housing, preventing unfiltered air from entering the cabin. It separates solid impurities such as dust, pollen, and abrasive particles from the air. 2. Precautions: The filter easily accumulates dust. Use compressed air to blow away loose particles—never wash it with water, as this may damage it. Over time, the activated carbon filtration function in the air conditioning filter diminishes, so it's advisable to replace the filter at a 4S shop.