WHAT SMELLS?

Maxine took her car to her mechanic.
She told him "Every time I take any of my friends
out in my car, after a while there is this terrible
\smell !! . It never happens when I am on my own"??
This quite intrigued the mechanic so he said, "OK,
lets go for a spin and see what the problem is". Off
they went. She drove down a one-way street in the
wrong direction at 70 MPH, swerving, hitting the
curb on both sides of the street, narrowly missed
three pedestrians in pedestrian crossings, ran
several red lights, and just missed a
policeman on street traffic duty.
They returned to the shop and she said,
"There it is now, there's that terrible smell. Can you smell it?"
"Smell it? Lady, I'm sitting in it ?!!