Anybody have any ideas how outside smell (smoke from jeeps, gutter smell) can come inside the car? I've already had the aircon vent checked. Sealed naman raw. Sa ilalim, they spotted some rusty spots and covered it up already. Pero may pumapasok pa rin na amoy. Worst time is if you're in a stop light and the car in front of you has a bad exhaust problem.

Any thoughts?