There has be *one* (un, eine, hitotsu) occasion where Shampoo
tried something like this, viz. the Magic Mushroom episode.
The mushrooms had the ability to create a conditioned reflex
within one person, and Shampoo tried to make Ranma hug her - it
never worked the way she wanted, either.

All other "Passion Spices" are pure fanfiction and not canon.

A-yep! The Takahashi Guardian put in only put in one drugged-food episode.
However, she's depicted to be as bad with spiked food as Kodachi is with
her Bouquettes-from-HELL.

Shampoo: (Popping her head into the console room) Shampoo drug only few
dish with good intention and she still no live down! (disappears back into
the bowels of the TARDIS)

(Wyrm gets up and pokes his head into the interior door.) I wonder where
all these dang stowaways come from?

                           ---------------------
-wyrm(AKA Tom Jefferys; Time Lord for Hire, "Have TARDIS; Will Travel.")
<wyrm@mail.utexas.edu>                       <JEFFERYSTR@rascal.guilford.edu>
Member of the AFSS          Depraived Kawaii Thing of the First Order, Martin
   =<SIG>= Wyrm-chan @_@ H-Wyrm @_@ Ten @_@ Chibi-Usa @_@ Azusa =</SIG>=
=<^_^>= R1/2#_#BGC#_#Sailor Moon#_#Dr Who#_#Star Trek#_#Monty Python =</^_^>=

"DINSDALE!!!" -Spiny Norman