Yes, DEN's address is at https://www.openstreetmap.org/way/851424893 which is not very specific as to where it is.  I think this is why when mkgmap generates a map for my Garmin, the Garmin takes me to some really weird spot nowhere near the airport, likewise for the same reason.   Might have to remove the address from the way and stick an address point on the terminal or somewhere along Peña Blvd.