You ought to check out
Strong Neroli Slow-diffusion Matrix
The strong neroli slow-diffusion matrix is just buying a 30 ml blue bottle from the Supplies menu at Androtics, and chosing the strong neroli option. You may be able to search for strong neroli slow diffusion matrix for how MHarris told tacitus about the stuff a while back, it is GREAT!
Also, Tacitus said, if I recall correctly, and jojoba and some other oils can be used to extend diffusion. Tacitus also said something about wearing stuff under your clothes to slow diffusion. Oh, and remember, Tacitus seems, to me, to use large doses of some items. Very large doses.