As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DTW INFLIGHT T398/01FEB ORD TO LGA - CREW REPORTED SMOKE IN CABIN WITH LEFT HYDRAULIC PRESSURE INDICATION AND RUDDER RATIO LIGHT ILLUMINATED. LANDED DTW WITHOUT INCIDENT. FOUND GLYCOL INGESTED INTO AIR CONDITIONING. PERFORMED PACK BURN. SYSTEM GROUND CHECKED NORMAL OPERATION.