Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Troubleshooting
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor; Flight Deck / Cabin / Aircraft Event Illness / Injury
General Maintenance Action; General Flight Cancelled / Delayed
Aircraft
Aircraft had odd odor upon walking onto flight deck. Packs were off; and no GSE was exhausting in to the airplane/ pack inlets... we tried each pack independently to isolate; but smell remained; a few pax boarded and immediately complained of smell and got nauseous; deplaned; called Maintenance and Ops; wrote it up as a fume event; local Maintenance took aircraft out of service and we swapped aircraft.
A321 flight crew reported a fumes event during pre-flight resulting in passengers experiencing physiological symptoms.