I think you're going to have a hard time getting a taker for "tampon"
One thing that might assist in making your art more "organic" in the medical sense ... (and it will reduce your budget significantly) would be to get a bunch o' bums ... uhhhh, I mean persons who are residentially and reality challenged who have issues with substance abuse and give them a buck each to mill around aimlessly.
You get used to the smell after the first couple minutes of exposure. Promise.
Strange as it may seem, the actions of Cellar Dwellars are nowhere near as random.