What was found
CREW REPORTED SMOKE IN CABIN DURING CLIMB. CREW DECLARED AN EMERGENCY AND DIVERTED TO IAD, AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED OPERATIONAL CHECKS OF BOTH BLEED SYSTEMS, PERFORMED ENG RUNS, AND OPERATIONAL CHECKS OF ENGINE ELECTRICAL SYSTEMS ALL PER EMB AMM AND COULDN'T DUPLICATE ANY SMOKE OR SMELLS. A/C WAS THEN RETURNED TO SERVICE.