Air Conditioner problems of the 2014 Toyota Camry Hybrid

I purchased a 2014. 5 Toyota camry xle hybrid on November 3, 2014. Recently, the vehicle emits a foul order when the air conditioner is turned on. I took it to a local dealership who tried to tell me that all cars have this problem. I see there is a class action lawsuit for 2012 model year vehicles, and Toyota is still producing vehicles with this problem. The dealership offered to do a foam clean of the system and install a charcoal filter for the tune of $150 without any guarantee that this would even fix the problem. The smell happens when the vehicle is in motion, and we are just now coming in to warm weather in my part of the us, so that's why I'm noticing the smell at this time.