What Causes Odor in the Car on Rainy Days?

[MatteoLynn]

Odor in the car on rainy days is caused by humid air and infrequent cleaning of the air conditioning ducts. Here are specific details about car air conditioning: Introduction: The car air conditioning system, abbreviated as car AC, is used to regulate and control the temperature, humidity, air cleanliness, and airflow inside the car cabin to optimal conditions. It provides a comfortable riding environment for passengers, reducing travel fatigue, and creates good working conditions for the driver, playing an important role in ensuring safe driving. Layout: Different types of air conditioning systems have varying layouts. Currently, most cars use an integrated heating and cooling air conditioning system. Its layout involves assembling components such as the evaporator, heater core, centrifugal blower, and control mechanisms together, referred to as the air conditioning unit assembly.

[OEmery]

The musty smell in the car on rainy days gives me a real headache, it's something I have to deal with every rainy season. Most likely, it's because the air conditioning system wasn't cleaned properly, and the evaporator has grown mold in the humid conditions, blowing out a musty odor when the AC is turned on. It could also be that the car mats have accumulated water, either from a leaky wiper or windows not being closed tightly, allowing rainwater to seep under the mats and rot, causing a foul smell. I once had a similar experience where the whole car smelled damp and musty. After checking at the repair shop, it turned out the AC filter was clogged with dust and bacteria. It's recommended to clean the air conditioning system regularly, about every six months, using a mold-removal spray and keeping it well-ventilated to prevent this. The car's interior should also be kept dry; after rain, check the seals on doors and windows promptly to prevent moisture from lingering.

[LaArthur]

Odors in cars during rainy days are often closely related to humid environments. The air conditioning system is a primary source; when the evaporator accumulates dust and mold, it releases unpleasant smells. Additionally, water leaks in the car body, such as clogged sunroof drainage pipes, can allow rainwater to seep into the floor, causing carpets to mold and rot. I once discovered this issue during a self-inspection, and the odor disappeared after cleaning. It's also important to watch for external pollution sources, as impurities in rainwater entering the air intake can also cause odors. Preventive measures include regularly replacing the cabin air filter, keeping the interior dry, and being more diligent with maintenance during the rainy season. Simple tools like disinfectant sprays can handle DIY treatments, but for severe cases, it's safer to consult professionals.

[StChloe]

A strange smell in the car on rainy days is often caused by a dirty air conditioning system. High humidity allows bacteria to grow in the ducts, resulting in a musty odor when the air blows. Alternatively, carpets that get soaked and don't dry properly can rot and emit foul odors. I've experienced this myself—it's unpleasant even when the AC is on. A simple solution is to open the windows for about ten minutes after parking to ventilate the car, or use an air conditioning cleaner spray. Also, clean up any clutter inside the car, as food residue combined with moisture can easily lead to mold. Address the issue promptly to prevent it from worsening, and remember to replace the cabin air filter every quarter to maintain cleanliness and health.