If it were necessary to choose a perfume to represent the passage to the modern world, Jicky, from 1889, would be a strong candidate. Not because it all started there. But because Aimé Guerlain combined natural materials with coumarin and vanillin in a construction that no longer needed to faithfully imitate a flower or a garden.
Modern perfumery emerged when chemistry expanded the possibilities of creation at the end of the nineteenth century.
Jicky made the mix visible
Vanillin offered a definite reading of vanilla. Coumarin resembled freshly cut hay, almond, and tonka bean. Alongside natural materials, these molecules did not necessarily betray a laboratory; they gave structure and a different signature to the composition.
Fougère Royale invented a landscape

A few years earlier, Fougère Royale, by Houbigant, had used coumarin to create an imaginary "fern". Ferns do not offer the perfumer the smell described by this family. The name came to represent a constructed landscape: fresh, aromatic, soft and shaded.
This is a turning point. Fragrance no longer depends only on reproducing something recognizable. I could suggest an idea.
Chanel No. 5 showed the power of abstraction
In 1921, Chanel Nº 5 it consolidated another possibility. Its aldehydes contributed to a luminous and abstract effect, in which no flower had to tell the story alone. The result was not a bouquet photographed with precision, but a bouquet transformed by light.
The lab didn't replace the garden. It increased the vocabulary used to describe it—and allowed it to imagine gardens that never existed.
A test less concerned with origin
When trying on a perfume, try to suspend for a few minutes the question "is this natural or synthetic?". Look at the effect first. Is there transparency? Volume? A texture of talcum powder, clean fabric or polished wood? Then, if it makes sense, investigate how the formula achieved this impression.
This is the most interesting legacy of the modern turn: not the opposition between garden and laboratory, but the freedom to create something that did not exist before opening the jar.
