Andres Morejon

Hello, my 02 C32 has a pretty bad exhaust smell from the AC whenever I am stopped, does not matter what the AC is set to. I have noticed the drivers side footwell is also warm/nearly hot when you place your hand on the side of the center console (higher up where it meets the upper plastic piece). The exhaust seems to not be leaking and the AC still cools. After idling for a bit it seems to die off but returns on every stop when driving around town. I also seem to be getting 1 or 2 more MPG if that is associated with what i said. Sorry for the long question and thank you for any help!