Smith first appeared on the world scene as an 18-year-old at the Seoul Olympics and narrowly missed the B-final in the 200 m backstroke (top 16). Smith's second major championship was at the 1991 World Championships in Perth, Australia, where she finished 13th in the 400 m individual medley. She competed at the 1991 European Championships and qualified for the 1992 Olympic Games. She competed in the 200 m medley and backstroke and 400 m medley in the 1992 Olympics in Barcelona, Spain, despite suffering an injury in the months leading up to the Games. She finished fifth in the 200 m butterfly at the 1994 World Championships. In that same year, she suffered from glandular fever, which affected her training prior to the World Championships.