When I first applied a pheromone product I too felt a little “strange” (if I recall it was a couple drops of Primal Instinct), but the effect passed. I noe only feel a bit “odd” when I do higher-that-“normal” application. Like I tried a 4 IShine, 4 IFM, 2 TAF, 2 (2.5) -none, and a few drops of a314 as an “overkill” experiment (at least it was for me) a while back. I was almost shaking for a while… (I may have had 2 IOpen as well but I don’t recall). Testing my limits sort of thing. Whoo.