I'm just a lurker but my car does the same is a 2017 gt and the smell is so strong that I can smell it even when I'm in The living room and the car in the garage,I guess is normal I have 400 miles so far.
That was a "Press car" it's been abused the tranny has been replaced. Mcm made a video of this car were they put a mic close by the exhaust and just redline it for 10 minutes just to hear the engine scream :(