Generally speaking, bleach is a dilute solution of sodium hypochlorite, which slowly decomposes into NaCl NaClO3 O2 and rapidly decomposes when heated and exposed to light. NaClO3 is inedible, easily oxidized and soluble in water.

The conclusion is that bleach is harmful to the human body, but it won't be harmful if you wash it twice more ~ if you don't trust, just scald it with boiling water.