What was found
CLE - FLT 1219 - TOXIC FUMES WERE SMELLED IN COCKPIT & CABIN WHILE EN ROUTE FROM DTW TO EWR. THE OXYGEN MASKS WERE DEPLOYED AND ACFT DIVERTED TO CLE WHERE IT LANDED WITHOUT INCIDENT. MX FOUND RAIN REPELLANT RESERVOIR LEAKING FLUID. RAIN REPELLANT RESERVOIR WAS REMOVED AND REPLACED. LEAK & OPERATIONAL CHECKS WERE GOOD. IN ADDITION, RT ACM WAS REMOVED AND REPLACED DUE TO EVIDENCE OF OIL LEAKAGE. AN INSP OF LT & RT COALESCER BAGS FOUND NO EVIDENCE OF CONTAMINATION, BUT RT BAG FOUND FROZEN DUE TO FAULTY 35 DEGREE TEMP CONTROLLER. TEMP CONTROLLER REPLACED. MX REPORTED ALL OXY MASKS HAD DEPLOYED. EXPENDED OXY GENERATORS REPLACED & OXY MASKS STOWED IAW MM 35-22-31, PAGE 201. (X)