It's going to cost 'em a pretty penny just to get rid of the pong. I was in there a few years back, a couple of years after Reliant Stadium opened (the Run for the Rose ended in there), and the damp smell was pretty overpowering. Maybe it was the runners, but I don't think so. Can't imagine it's any better now.
FWIW, being down on the "field" it's even more impressive than being in the stands. It's like someone put a lid on the sky.