Leave it to Japan to fiddle with the adult diaper technology and develop the next-generation space toilet. The Japan Aerospace Exploration Agency (JAXA) has teamed up with engineers from the private sector to complete the project in the next five year:
Clean and easy to use, the envisioned space toilet is designed to be worn like a diaper around the astronaut’s waist at all times. Sensors detect when the user relieves him or herself, automatically activating a rear-mounted suction unit that draws the waste away from the body through tubes into a separate container. In addition to washing and drying the wearer after each use, the next-generation space toilet will incorporate features that eliminate unwanted sound and odor.
So until they come out with the next gen the wearer will have to deal with an unwanted odor.
Call me crazy but I don't think they'll sell many of the 1st gen.
http://en.wikipedia.org/wiki/Heighliner#Stillsuit
More seriously : it reminds me of Franck Herberts's Dune suits.