I like that it works! My cars previous owner had dogs and I'm allergic to dogs. It would make me sick every time I drove the car and we won't even get to the smell (I can smell it a million miles away, I think it's due to the allergies).
I got this before it became a top item or whatever and I can see why it is. It takes all the smells away.
It may be weird at first to have no smells at all, but I'd rather have that than get into the car, get itchy, be bothered with smells, and generally suffer in the car.
P.s. I have a small SUV/truck type of car with a third row, so it doesn't have to be a compact car to work