2004 Chrysler Pacifica AWD. Just bought the car about two months ago
and i am getting a very strong exhaust,propane gas,rotten egg smelling odor
from the vents blowing into the cabin. The odor is only noticeable when the car comes to a complete stop and is very strong..seems to be less noticeable when i put the recirculation mode on.

I cannot have my family breathing these toxic fumes need help.

Have done many searches and seems to be common with the Pacifica but nobody seems to know what it is including dealers.

Thanks Matt