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How to Deal with Foul Odor in Car Air Conditioning?

3 Answers
LeBeckett
08/26/25 5:00am
Solutions for foul odor in car air conditioning are as follows: 1. Turn on the air conditioning, set the temperature to the highest, adjust the fan speed to maximum, maintain for 5 to 10 minutes, then resume normal use, and follow the prevention methods mentioned above when using the air conditioning. 2. Avoid frequently setting the air conditioning to the coldest temperature; always keeping the fan speed at the minimum; and using the internal circulation mode all the time. Vehicles that often have all three or two of these conditions simultaneously are most likely to develop air conditioning odors. 3. Increase the airflow speed around the condenser pipe. Always prioritize using the external circulation mode, as it consumes little extra fuel since the car's air conditioning compressor is always on.
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OCooper
09/08/25 6:48am
Hey, I've noticed my car's AC always has that musty smell, which is really annoying. It's usually caused by mold growing in the evaporator due to accumulated water. When driving, try turning off the AC and setting the fan to high a few minutes before reaching your destination to let the ducts dry out. If you're into DIY, remove the cabin air filter to clean or replace it, and spraying some AC cleaner from Taobao can also help. If the smell is too strong, you might need to visit a repair shop for a deep disinfection—they use professional equipment to clean the evaporator. Developing good habits, like not turning off the AC immediately after parking, can significantly reduce the chance of odors. This is beneficial for both our health and driving comfort. Paying attention to ventilation and timely maintenance will keep your car free from that weird smell.
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OTimothy
10/22/25 6:53am
I've encountered the issue of smelly air conditioning more than once. Just a short drive and I'd notice an unpleasant odor, likely due to dirt buildup in the AC system or a long-overdue filter replacement. My approach is straightforward: First, check if the filter is dirty and replace it with a new one if necessary. Then, turn the AC to maximum fan speed for a few minutes to blow out any dust. If the smell persists, consider buying a disinfectant spray to treat it yourself or take it to a reliable repair shop. Prevention is key—I use the external air circulation mode weekly to ventilate the cabin and pay extra attention to humidity control during the rainy season. A car is like an old friend; regular maintenance to keep the environment clean ensures a more pleasant driving experience.
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