New car smell, it's awful. Sort of stale plastic if I were to describe it.
Amplified by long trips on bad roads as kid. Guaranteed to make you feel like vomiting on some sections. Now when I anticipate/pack for a trip I tend to smell that again even though I'm not even in a car.
You are not alone my friend. I heard that Chinese ppl feel the same way as you do and pay ppl to remove the smell before using the car. I don't know if it is because of the same reason tho haha