What was found
(CAN) AIRCRAFT REPORTED STRONG ODOR THROUGHOUT THE CABIN AND FLIGHT DECK IN CLIMB. NO SMOKE VISIBLE. CREW RAN AIR CONDITIONING IN MANUAL/AIR MIX VALVES COLD, SMELL DISSIPATED. AIRCRAFT RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE CONDUCTED ENGINE RUNS ON BOTH ENGINES AT 70 PERCENT N2 FOR 10 MINUTES WITH EACH CORRESPONDING PACK RUNNING IN HOTMODE. ODOR DISSIPATED GRADUALLY. SYSTEM CHECKED SERVICEABLE. AIRCRAFT RETURNED TO SERVICE WITH NO FURTHER INCIDENTS TO REPORT. NOTE: PREVIOUS NIGHT MAINTENANCE INCLUDED NR 1 ENGINE FAN BLADE LUBE/INSPECTION TASK NR 95-072-00-01.