scent is the pheromone, your
attitude and personality are the aphrodisiac.
When you enjoy what you are doing and who you are with the details of the evening only enhance it. So if you're eating oysters and having a great time, of course you're going to be in the mood for loving later. If you're eating oysters and the person you are with is being a prick, you'll pass and might try again on a different occasion.
Perfect example, I love Chinese food. My husband is indifferent, it's the last thing he would pick for dinner. So when he says hey baby wanna order some take out and watch a movie, hell yeah I'm ready to play with him. He did something for me because he wanted to and he knows how much I love it and there's just no bigger turn on than that.
I think all of these products are throw backs to "snake oils". Same with that stupid bracelet that is supposed to center your balance. I'm sure some have seen the infomerical. The guy is standing in the mall and yanks on the arm of an unsuspecting passerby then does it again. Well, duh...of course they'll be more balanced, they're expecting it this time.