Hi, My husband has the same smell coming from the air-con in his 2010 VX Prado. Usually lasts about 5 minutes then goes away but sometimes it lasts the whole trip. He doesn't notice it anymore because he is in the car all the time and has probably gotten used to it, whereas the kids and I think it stinks. The smell started occurring about 4 months after he got the car. At first I thought the carpet must have gotten wet or there were smelly socks or a mouldy lunchbox in the backseat., but we soon worked out it was coming from the air-con (and only in the front seat - not the backseat). I have a 2010 Kluger KX-S and the air-con is fine. In my opinion, bad smell coming from the air-conditioning = germs. I will make sure he gets it checked out at the next service.