Most drivers only remember the cabin filter when a bad smell appears. But by then, the air conditioning system has already turned into a "biological laboratory."
Allergist-immunologist Irina Manina warns that decomposition products and mold spores entering the respiratory tract through airflow can cause allergies and severe infections. A moldy or sour smell from vents signals fungal colonies. Sometimes a "gray fog" appears when the system is turned on – these are mold particles.
"Food left in the car can spoil and rot, creating a breeding ground for microorganisms inside the cabin," says Manina.
For people with chronic diseases, inhaling mold spores can worsen their condition. Even healthy individuals may suddenly develop allergies. Many mistake mold reactions for colds. In worst cases, anaphylaxis – suffocation – may occur.
"Attempting to replace an old filter on your own is dangerous. Opening the system releases a cloud of microorganisms, causing bronchospasm, Quincke's edema, or severe coughing," the expert adds.
Fungal infections can manifest unexpectedly: frequent cleaning or DIY maintenance may lead to hand dermatitis or eczema. Contact allergies via car surfaces are a serious risk.
"For allergy or asthma sufferers, such cars are unsuitable. Mold settles under carpets and upholstery. All soft interior parts must be replaced," the doctor emphasizes.
Recommendations for safer trips:
- Filter replacement schedule: follow manufacturer's rules if no allergies; replace twice as often if prone to allergies.
- Thorough cleaning: replace filter alongside full interior cleaning, including under mats and trunk.
- Special products: use foaming cleaners and aerosols for AC and soft surfaces.
- Vapor control: prevent exhaust fumes and alcohol vapors from entering cabin; harmful for asthmatics.
- Food policy: avoid leaving food scraps in the car – even an apple core can grow penicillium mold.
Car maintenance is not just about engine oil. The cabin is where we spend much time, affecting our immunity. Mold can severely damage the respiratory system. Regular cleaning and AC diagnostics are simple preventive measures against chronic diseases.
