What was found
A STRONG SMOKE LIKE ODOR DEVELOPED DURING CRUISE AT 41000 FEET. NO SMOKE WAS SEEN NO HEAT NOTICED & ALL CIRCUIT BREAKERS REMAINED SEATED. ODOR GOT STRONGER OVER TIME. EMERGENCY DECLARED AND AIRCRAFT DIVERTED. COMPLETED INSPECTION & CHECK & DECONTAMINATION OF AIR CONDITIONING SYSTEM, WITH NO DEFECTS NOTED. COMPLETED INSPECTION & CLEANING OF WATER SEPARATION SYSTEM WITH NO DEFECTS NOTED, LEAK & OPERATIONAL CHECKS COMPLETED SATISFACTORY. PERFORMED MULTIPLE EXTENSIVE ENGINE RUNS WITH BLEED AIR IN ALL POSSIBLE CONFIGURATIONS, OPERATIONAL CHECKS & GENERAL VISUAL INSPECTIONS OF AVIONICS BAY, UNDERNEATH & BESIDE BOTH PILOT SEATS ALL BLEED AIR TUBING, PERFORMED OPERATIONAL CHECKS OF ALL GALLEY ELECTRONICS & ACCESSORIES WITH NO DEFECTS NOTED. ALL WORK PERFORMED IAW AMM 25-50-00-700-801, 21-52-18-100-801, AND 20-10-00.