As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AT 1500 FEET AND AFTER SWIRCHING THE BLEEDS FROM APU TO ENGINES, WE SAW SMOKE COMING OUT OF ALL VENTS IN THE COCKPIT AND SMELLED WHAT WE BELIVE IS ENVIRENMENTAL SMOKE. WE DECLARED AN EMERGENCY AND LANDED ABIUT 10 MINUTES LATER. THE TEMPERATURE IN THE COCKPIT KEPT INCREASING BUT THE SMOKE DISSIPATED. REPLACED ACM. OPS CHECK GOOD. IAW CL-350 AMM: 21-52-13