If you are getting exhaust fumes in the vehicle you need to have this looked at right away. As you know, these fumes can be deadly.
You could have a leak under the hood and it's coming in through the front firewall, or the pipe could be broken under the vehicle and somehow it's getting in through the floor.
You will need to take the vehicle in so that it can be put on a lift to find the problem.
Have this looked at as soon as possible.
〉 Answered on Apr 19th, 2008 by Lori Johnson, Owner and Instructor at Ladies Start Your Engines