Complex sentence: On August 24,1993, underwent an emergency appendectomy and later developed a severe post-surgical infection (causing four abscesses in his stomach) that was nearly fatal and forced him miss the entire season, including Super Bowl XXVIII.
Split into simpler sentences: On August 24,1993, underwent an emergency appendectomy and later developed a severe post-surgical infection (causing four abscesses in his stomach) that was nearly fatal. Smith was forced him miss the entire season, including Super Bowl XXVIII.