An interesting rare perfumed plant is Herald’s Trumpet (Beaumontia grandiflora) which has wonderful large white flowers with a sweet tropical perfume. It is a vigorous woody climber which is native to the region from India to Vietnam and belongs to the same plant family (Apocynaceae) as Oleanders, Frangipanis and Mandevillas which typically bleed a white milky sap from cut stems.

Common name: Herald’s Trumpet
Botanic name: Beaumontia grandiflora
Climate: Will grow best in the warmer zones of Australia, north of Coffs Harbour, NSW. It prefers sub-tropical and tropical conditions to thrive and can look miserable in areas where temperatures fall below 10

https://www.burkesbackyard.com.au/fact-sheets/in-the-garden/flowering-plants-shrubs/beaumontia/