This will come across stronger from the spray than a few dabs from a small vial. The problem with iffy notes is the association you have with that particular note. You have to re wire your brain so to speak so your association for that note is changed and you can only do that by trying to understand the scent.
With Cuba its all about the creators take on his trip to Cuba and putting that into a fragrance. So we get rum, sugarcane, tobacco and musk. When I bought the full bottle of this I also bought a Montecristo cigar and smoked it after I sprayed on the cologne. And the fecal note smells exactly like the tobacco from a Cuban cigar. So for me when I get that note I no longer think it as a fecal note but a Cuban tobacco note. It all depends if you can get a understanding of it to change your perception, sometimes you can others times you just cannot take that leap.