Date: 202012
Local time of day: 1801-2400
Location: ZZZ.ARTCC, US
Aircraft: EMB ERJ 170/175 ER/LR
Operator: Air Carrier
Operating under: Part 121
Flight plan: IFR
Mission: Passenger
Flight phase: Climb
Reporter organization: Air Carrier
Reporter function: Pilot Flying; Captain
Reporter qualification: Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP)
Human factors: Physiological - Other
Anomaly: Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor; Flight Deck / Cabin / Aircraft Event Illness / Injury
Detector: Person Flight Attendant; Person Flight Crew
When detected: In-flight
Result: Air Traffic Control Provided Assistance; Flight Crew Overcame Equipment Problem; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Diverted; Flight Crew Landed As Precaution
Contributing factors: Aircraft; Human Factors
Primary problem: Aircraft

Narrative: On flight from ZZZ to ZZZ1 'smoke-like' smell present in both cockpit and cabin. FA (Flight Attendants) investigated to determine source; but were unable to locate anything of note. Smell dissipated and generally disappeared in cockpit; whilst simultaneously continued in the cabin and became more present. Smell when present in cockpit was identified as smelling like burn off from automobile exhaust piping when road water is splashed on the piping. Maybe even an oil burn off smell. Definitely not the same smell as deicing fluid. FAs reported the smell was similar to the burning smell of an overheated hair dryer.On continued investigation while still climbing; FAs noticed a strong smell of fuel in the aft cabin. One FA reported development of nauseous feelings and also a strong headache. As CA (Captain) I determined that continuation was a poor choice and elected to divert to ZZZ2 as it was at our approximate 4 o'clock position and was a good Airport Rescue and Fire Fighting location should fire be present.ATC notified of our intentions and diversion was begun.No indications on EICAS; no hydraulic or fuel losses. No additional identifications from the FAs except that the odors were continually present in descent and approach and taxi and were strong. Odor returned to cockpit but only slightly.  FO (First Officer) did not report noticing it again; CA noticed only slightly.ATC requested fuel remaining and souls on board. Priority handling never declared by CA; FO never heard requested priority handling status; but it is believed that we became priority handling status. Landed opposite direction in ZZZ2 and met by Airport Rescue and Fire Fighting.Landed XR; exited runway and parked on taxiway. Airport Rescue and Fire Fighting did a drive around for any abnormalities or indications of smoke or fire and found none. Taxied to gate XX with ARFF following. Taxied behind a 777 and experienced exhaust fumes. Only reason for note of this is that the exhaust fume odor was distinctly different than the odor noticed during the flight.Parked at gate. Did not start the APU having concerns that it may have been the culprit in regards to the possible odor and\or with the potential to be a source of fire and\or smoke at parking. Ground power connected and normal shutdown and parking.Airport Rescue and Fire Fighting personnel met the aircraft as jetbridge attached. Forward FA was the reporting FA for the feelings of nausea and headache and was removed from the aircraft first. As CA I assumed her position for overseeing of the passenger. FO continued to monitor radios.FA reported the fresh air provided relief; but not complete. Was released by the EMTs and also cleared by MedLink to the hotel for rest.Passengers deplaned approximately 5 minutes after door opening. Smoke like smell in the cockpit and cabin and also fuel smell in the cabin. Diversion to ZZZ2.




Synopsis: EMB-175 Captain reported a fumes event during initial climb resulting in a diversion to a suitable airport.