Possible OD-Ghosting, try two drops then go from there. One drop between the wrists, then one on your neck where you can feel your pulse.
Also, A314 will generally not bring people to you, you must still engage with people. Thus on the metro, it’s not surprising that no one gave you any attention. Next time if you’re sitting next to someone, strike up some random fluff.
Also, the person you said who saw you, then “ignored you badly.” His quick departure from your presence might have been caused by A314.