Synthetics
(e,e)-2,4-heptadienal smells like a flavoring compound with a subtle, fruity, and slightly green aroma.
Mosciano, Gerard P&F 17, No. 5, 127, (1992): Fatty, green, oily, aldehydic with a vegetative nuance
Luebke, William tgsc, (1989): Fatty green oily aldehydic vegetable cake cinnamon
Kingchem Laboratories: Pungent fatty, green
FCI SAS: Pungent cinnamon-like
Bedoukian Research: Fatty, sweet, fruity citrus/melon odor with spice notes