What was found
ON CLIMB OUT FROM KLNK, AROUND FL260, BEGAN TO SMELL AN ABNORMAL FUME IN THE FLIGHT DECK. OODR WAS REMINISCENT OF FUMES FROM A WILDFIRE. ALL ACFT INDICATIONS IN THE FLIGHT DECK WERE NORMAL & ODOR WOULD DISSIPATE & COME BACK, ASKED THE FLIGHT ATTENDANT TO INSPECT THE CABIN, INITIALLY SHE DID NOT SMELL ANYTHING. AS WE APPROACHED KDEN IN CRUISE, ODOR TURNED SLIGHTLY ACRID, IN CRUISE, FA BEGAN SMELLING THE ODOR. AN OBSERVATION OF AIRCRAFT SYSTEMS ALL WERE NORMAL & NO SMOKE VIEWED AT ANY POINT. ODOR NEVER BECAME OVERWHELMING. TURNING OFF RECIRC FAN & AFT CARGO FAN SEEMED TO HELP, BUT ODOR REMAINED. OUTSIDE OBSERVATION OF OUTSIDE AIR QUALITY SHOWED HAZE, SUSPECT POTENTIAL OUTSIDE AIR QUALITY COULD BE THE CULPRIT. ON GROUND, ODOR BEGAN TO DISSIPATE.