Why does the air con in my car smell musty?

A vehicle?s air conditioning system is a breeding ground for bacteria and mould

Source: http://www.theglobeandmail.com/globe-drive/car-life/auto-therapy/why-does-the-air-con-in-my-car-smell-musty/article2440245/?utm_medium=Feeds%3A%20RSS%2FAtom&utm_source=Home&utm_content=2440245

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