As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) AFTER ENGINE START, BOTH BLEEDS WERE SELECTED ON AND THE CABIN AND FLIGHT DECK FILLED WITH A SMOKE HAZE. ENGINES WERE SHUTDOWN AND A RAPID DEPLANEMENT WAS CARRIED OUT. AFTER MX T/S WAS CARRIED OUT THE AIR CYCLE MACHINE AND THE HEAT EXCHANGER WERE REPLACED. THERE HAS BEEN NO REOCCURRENCE. AIR CYCLE MACHINE, PN 782790-16, SN 880435, TSR 5040, CSR 5504.