It resembles the Paraprasophyllum sp. aff. odoratum leek orchid described in "Orchids of Central Western NSW" by Colin C Bower and Richard W Medd. It had a strong citrus scent.
Hey Rob, I don't have that particular guide but i'm happy to add and maintian the taxa. Was it just 'Paraprasophyllum sp. aff. odoratum'? That name has a few associated aff. taxa
In his book for Paraprasophyllum sp. aff. odoratum, Colin Bower says: "Orchids long known as P. odoratum are now considered to be a complex of many species, one of which occurs on the upper western slopes and western tablelands in the region". I believe that David L Jones is currently revising that group of orchids.