An exhaust fan, on the other hand, will do a great job. And some ovens have an exhaust fan for smoke control (hah, I grew up with one of those and I miss it) and to reduce humidity in the oven when desired (nice, but not nearly as nice as the extinct Thermador system).

Admittedly, the ducted exhaust fan is not nearly as useful in a commercial setting where the oven is under a hood.