Thanks guys, you have helped me to feel hopeful again!
I am very glad to know that the new ones does not smell, or not as the old ones!
Thanks for the great idea! I will tell her that we are going to test drive a gas model, and after the test drive (hopefuly no complain from smell) than I tell her that she had "been pranked!" and have just finish a test drive in a Diesel truck !!!
Thanks again guys!!