I have a 2017 GLE 350 for around 10 months. For the past several weeks we notice a strong foul smell when we first get in the car and turn on the air conditioning. (we live in Florida) The smell is severe and can only be described as a sour vomit odor. We had this problem in our 2014 ML350 and was remidied when they changed a filter. Normally it costs around $350 but was done free due to our loyalty to the MB brand. The current problem has occurred much faster in our lease as comparred to our previous ML. Is there any solution to this condition to prevent this from occurring again if indeed it is the filter that needs to be replaced. Thank you!