Aphotic; I've not encountered this. It sounds odd/unique. I wonder if there are some other unknown influences at play.
Is there a way that you could describe the events as they unfolded in detail and fairly accurately chronologically?
OK here is as detailed as I can get until next cycle. My mom room is 18/6 and flower is 12\12 the rooms share a wall but are sealed from each other or so I thought. The flower room draws air from the ventilation ducting under the house, all vents are sealed except for two vents on the other end of the house (I just realized I forgot a vent, the room next to the mom room, where the mom room gets her air!!!!!) So in essence the mom room has been sucking air from the flower room, into the adjacent room, and then into the mom room, that's how they are getting their dose of pheromones. I still do not know why its so potent. All my plants are exceptionally healthy. So above is the how.
Here is what happens, I flip to 12\12 in my flower room, this time around the girls showed the first pistles after the first week or so, a few days or perhaps at the same time so did all of the moms, once this happened the moms followed the growth patterns of the girls in flower right up until the stretch. Instead of full formed mini buds like the flower room the mom room plants grew very long single or double pistils and very swollen calyx, maybe groups of 4 calyx bunches at node sites each, they also started tricomb growth on the stems and smaller leaves, eventually spreading to the larger sun leaves, resulting in smelling quite pungent. From that point flowering stopped in the mom room, no new growth for two to three weeks as the moms reverted to veg, once they started growth again they rapidly stretched about 6 or 7 inches, with several inches between nodes, this happened for about a week then they returned to normal growth and filled out.internodal length went back to 1-2 inches. The mothers didn't stretch at the same time as those in flower it was,weeks later. All in all I lost at least a month in my mom room.
Last cycle I was reverting clones taken from flowered infested plants, so the induction of flower took several weeks longer than normal, though the mom room also had this lag before showing signs of flowering.
I wish I could be more specific, and as I said I will be recording events daily next run with as much detail as possible.