[Mphillips]

Hello everyone, I just joined this awesome site after months of using it here and there for small issues and whatnot, but now an issue has come up and I'm not sure what to do. I bought my car back in April of 2015 and have loved almost every minute of it. That was until the first time it rained...the cabin smelled like an old basement and all of the windows had condensation. The first thing I did was hop on here and read up. The car has all of its plugs, it isn't the cabin air filter, and the AC unit is fine. So I took it to the dealership (who sprayed it with a hose for 10 minutes and said there were no leaks). So I thought it was a one time thing. Since then everytime it rains or snows it gets much more intense, now its to the point where the smells makes me want to vomit after about 30 seconds. I've taken it to the dealership 4 times for this issue and as it has been raining have scheduled another appointment at a different dealership for #5. My question is has anyone else had this problem? Also should I possibly file a lemon law claim as the car is currently undrivable and if it continues will be unsellable (which I couldn't sell this car to anyone the way it is because I am way to honest) if the second dealership can not fix it?
Thanks, Matt