The smell of freesia is transparent, fresh, green, lemony and spicy. Its odour cannot be extracted so is instead reconstituted by perfumers using a large quantity of ethyl linalool and linalool with touches of green notes and other transparent floral ingredients.
Linalool is a compound naturally present in flowers and is the main component of freesia. In fact, in some freesia species, the chemical odour make up is composed of over 90% linalool. This is why freesia smells of linalool and vice versa. Nature is chemistry.