So after driving my 2012 Passat TDI and parking it in a garage I can smell a bit of engine coolant. When I check level when hot it seems to be ok and it does not change. Had a dealer look at it and they said that everything is ok and they can't find any issues. Smell seems to be stronger on the drivers side of the engine. Does anyone of you smell coolant and should I be worried about it? thanks.