Ryujin
Legend
We don’t know what Alara knows, true. But as to the face? We already had one species on board spreading pheromones. Yaphit’s species could just as easily used chemicals to bliss out their prey to immobility, a la the giant slime mold in X-Files’ “Field Trip” episode.
Could, but it's not exactly reasonable to jump to that conclusion when everything leading up to walking into that room has been headed in a completely different direction. When you see Picard ordering Earl Grey from the replicator in the majority of ST:TNG episodes would you assume that he had Scotch in his cup when he's on the bridge?