McNabb is the brother-in-law of former Canadian Football League star Richard Nurse. Through this marriage, McNabb is the uncle of Canadian ice hockey defenceman Darnell Nurse, who was the seventh overall pick by the Edmonton Oilers in the 2013 NHL Entry Draft., Kia Nurse, a professional basketball player for the Phoenix Mercury and the Canada women's national basketball team and Sarah Nurse, who competed on Team Canada's national women's hockey team at the 2018 Winter Olympics.