A neat idea: a swallowable capsule that makes the body smell nicely. Presumably the first step towards sanitized metabolism.
http://www.nextnature.net/2011/08/swallowable-parfum/
http://swallowableparfum.com/
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[I]Raise your hands to the sky and break the chains. With transhumanism we can smash the matriarchy together.[/i]