Okay so there's a misconception. There actually has never been a "flowering hormone" that's been found. It's actually a protein that gets synthesized upon signalling to flower given by the pattern of far red vs. red light (cis/trans conversions of the molecule) in day vs. night. So it's this "rhythm" or light pattern assessed by the photo receptors that determine when it's time to start making Florigen (the protein).
Giberellins, the main vegetative hormone for the plant exists, but as far as I've heard or read there is not such a compound classified as a hormone that actually induces flowering. Either it hasn't been found or doesn't exist.
On the topic of how the plants can "tingle" each other with the scent of their aromas, it's certainly possible that an intense aroma in the field could help to trigger the onset of florigen, however usually the plants emit a gas known as ethylene which is known to induce ripening, and probably more florigen production, in many fruits. So ethylene could technically help signal more florigen production as well.
The gases emitted from the plant won't cause plants to flower spontaneously, as you need a certain pattern/light schedule to induce florigen via the photoreceptors
