why do i smell an oder of gasoline through my vents? on 2001 Mazda Protege

why do i smell gasoline through my vents when the air conditioning or heat is on?

2 answers
YOU HAVE A GAS LEAK IN THE ENGINE COMPARTMENT. DO NOT DRIVE TILL FIXED COULD CAUSE FIRE!
Stop the car and take to a repair shop right away....or call me at 973-483-4489 Ted