Buffalo for one.
The city of Chicago has never hosted a Super Bowl.
Through Super Bowl XLIV, that is Cleveland. Houston (Texans), Detroit (Lions), and Jacksonville (Jaguars) have hosted a Super Bowl but not played in one.
As of Super Bowl XLII, no city has hosted the Super Bowl 8 times. New Orleans has hosted 9. Miami (and Miami Gardens) has hosted 9, and Los Angeles (and Pasadena) have hosted 7.
Miami hosted Super Bowl II in 1968, and Super Bowl III in 1969, both at the Orange Bowl.
No. No team whose city has hosted the Super Bowl made the big game that year.