Due to the presence of this smell uniquely in newly manufactured cars, there is a certain air of prestigous associated with owning a car that has a "new car smell".
Anything that last longer than that isn't qualified as a 'new car smell', but rather said couple is putting on a insecure front, making their family and friends think they beat the odds are still so much in 'love' when really the realtionship has turned mediocre and/or boring.
Facebookuser: Bed is cold without my beautiful bride next to me. 45 min till i get warm. love you (insert name here).
Facebookuser: I MISS YOU (insert name here)! HOPE U HAD A GREAT DAY AT WORK. CANT WAIT TO TALK TO U ON MY LUNCH BREAK. XOXOXO IM MISSIN U LIKE CRAZY RIGHT NOW!
Friend 1: OMG- These face book posts make me want to PUKE.
Friend 2: Don't worry, it's just the new car smell. It'll wear off soon and they'll realize how big of jackasses they look like.