What is a feromonic field?

Answer 1

It's a fictional energy field invented by novelty vendor Alchemy Gothic. They sell a line of steam-punk items, including a ring called a "Feromonic Field Detector". The field is claimed to be generated by iron in blood, and it's further claimed that one's sex can accurately be discerned by the quantity/quality of one's blood-iron. So, by extension, it can also be determined by a feromonic field detector, such as the ring. Obviously, an anthropologist would be interested in such a device if she or he thought they would encounter individuals whose sex is difficult to establish through visual scanning alone.

Blurbs for the item, though, also suggest that having an accurate feromonic field reading is critical to successfully "transporting bio-matter", presumably in fashion akin to teleportation. The implication is that teleportation devices must be calibrated differently for males and females because of variations in blood-iron between the sexes. Thus, the ring is useful in establishing proper blood-iron settings on a presumed teleportation device.