Gas Smell on 1995 Nissan Maxima

What could be the cause to the gas smell in my car, I have looked every were and still could not find it, I took it to the machanic and he failed to find it. When I first start the car and turn on the defroster the smell is overwhelming

2 answers
Hi, possible fuel injector leak.Try my shop, I am with in 5 miles of you. Gl Ted.
Your gas cap could be loose or seal broken?