Is your central air conditioning system filling your home with unpleasant odors? Where could those smells be coming from? What can you do to stop them? I had this problem last season and found that the problem was caused by my dog urinating on my air conditioning unit outside of my home. After talking with a few people, I learned that smells coming from air conditioning systems is quite common and are caused by a variety of problems. To learn what could be causing the odors coming from your air conditioning, visit my website. Here, you will find a list of what could be causing the problems, as well as solutions for them.