Usually you can, the smoking area is located in the general area by the Burger King and is through the secure area.
Originally Posted by carbonaddict
as a European I have never come across midwest before but it looks a nice airline and offers the cheapest denver-nyc flight in the period I need. The flight is YX3 which has a 35 minute stopover in milwaukee. Will I able to get off the plane to stretch my legs during the stopover?