Jet fuel odors after landing
 

Why do I sometimes smell jet fuel after landing in an airliner? I presume that bleed air is taken from compressor stages that precede any part of the engine that manipulates fuel, so it seems unlikely that fuel from the engine itself could be finding its way into cabin air. Some have suggested that it could simply be odors sucked into the engine from the area around the airport, or perhaps the engine's own exhaust being sucked in during reverse thrust operation. Anyone here know for sure where this odor comes from? I only recall smelling it after landing, not during other parts of the flight.

taxy in , the APU is started and the air and electrics are taken from this so that when the aircraft is parked and engines shut down there is no interruption of supplies. Air supplies from the APU , as the air inlet is at the tail of the aircraft , it is not unusual to get a whiff of burnt Jet A1 from the engines.

Thanks, I had not even thought of the APU.