So, it looks like there is noabsolute answer then!?
I like to use Rose and Sandlwood. Try mixing 6 drops of Sandlewood and 4-6 drops of Rose into a 100 ml bottle of Sweet Almond carrier oil. This blend can be used as anall over massage oil! My wife and I use it and it does not cause any irritations when used on or around the genital area.
The scent should be very subtle. Too much can cause drowsiness, headaches and nausea. So, with that in mind, don't use it every day either - once or twice a week (time permitting) should be plenty.
Rose is also reputed to increase sperm count and guard against premature ejaculation - as is Jasmin.
Also, try filling a polant spray bottle with mineral water and add 3-6 drops of Ylang Ylang. Use the spray to freshen the bed sheets before making ther bed. This is a very sneaky way of applying an aphrodisiac as it can be done without your partner realising what is going on! Use it and wait a couple of days for it to take effect then reap the benefits!!!
Enjoy