I was playing a game on my new MacBook Pro 2016 13" TB and then it made a loud popping sound somewhere close to the screen and began to smell. It sounded like squeezing a plastic bottle (as I found others who have experienced the same thing describe). The smell is strong and sharp and it seems to be coming from the left back vent (when the apple logo is on top and upside down). The laptop was quite warm but not hot when this happened and the fans were not loud at all. I also had two dices under to rise it from the back and provide a better airflow (could this have been the cause?). But then again I used this method on my old laptop (mid 2012) often and it never caused any problems. After this happened I shut down my laptop and an hour later opened it. It has now been open for an hour and the laptop seems to operate normally and I can only detect the smell if I stick my nose close to the vent. Where does this smell come from? What about the popping sound? Should I be worried? I have had this laptop for less than a week.