I had this exact same issue (on my 2013) but I couldn't tell where in the engine bay the smell was originating. The smell was very pronounced in front of the vehicle right after shutting it off. I looked around the engine and radiator and kept an eye on the ground underneath where I parked but nothing was showing. Went to the dealer, twice, they also smelled it, could find anything, topped off the coolant level, and sent me on my way.
Frustrated with the dealer's lack of willingness to diagnose, I told my son what was going on. He added a leak detector additive to my cooling system. After driving around for a few weeks, he fired up his black light and found the source. In my case, it was the thermostat housing, one bolt wasn't properly torqued. He torqued it down and never had the smell again. He called it an "evaporative leak" because the coolant was evaporating on the hot engine and it only "bubbled out coolant" when the cooling system was under pressure.
I hope this helps you find your issue.