As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD LAV SMOKE WARNING MESSAGE ON TAKEOFF. SMELLED POSSIBLE BURNING DEICE FLUID. MESSAGE CLEARED AFTER SEVERAL MINUTES AND SMELL CLEARED AS WELL. (FLT#4810) RAN PACKS OFF OF ENGINES AND APU BLEEDS, NO SMELL/SMOKE NOTED AT THIS TIME. INTERROGATED SMELL/SMOKE IN FWD LAV IAW SL NO FAULTS FOUND NO SMOKE/SMELL NOTED AT THIS TIME.