Narrative:

While taxiing into the gate at ord, I smelled smoke. I turned to look into the cabin, and it was filling with smoke in the middle of coach. I notified #1 flight attendant. She was unaware but notified captain. Passenger were starting to panic and were getting up. Captain didn't make a PA until we were pulling into the gate. He didn't call the flight attendants. We were not sure if we were going to evacuate/evacuation. First officer told us to 'prepare for arrival.' at this point it was really getting smoky. Passenger deplaned normally. We never were told what happened.

Google
 

Original NASA ASRS Text

Title: AS THE B757 APCHS THE GATE AT ORD, CABIN ATTENDANT OBSERVES AND SMELLS SMOKE IN CABIN. FLT CREW NOTIFIED.

Narrative: WHILE TAXIING INTO THE GATE AT ORD, I SMELLED SMOKE. I TURNED TO LOOK INTO THE CABIN, AND IT WAS FILLING WITH SMOKE IN THE MIDDLE OF COACH. I NOTIFIED #1 FLT ATTENDANT. SHE WAS UNAWARE BUT NOTIFIED CAPT. PAX WERE STARTING TO PANIC AND WERE GETTING UP. CAPT DIDN'T MAKE A PA UNTIL WE WERE PULLING INTO THE GATE. HE DIDN'T CALL THE FLT ATTENDANTS. WE WERE NOT SURE IF WE WERE GOING TO EVAC. FO TOLD US TO 'PREPARE FOR ARR.' AT THIS POINT IT WAS REALLY GETTING SMOKY. PAX DEPLANED NORMALLY. WE NEVER WERE TOLD WHAT HAPPENED.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.