The virtual cocoon is a proposed, in development virtual reality helmet that will allegedly stimulate all five of the human senses when it is finished.
The helmet will include a high-definition television screen, speakers, a wireless computer, a tube that releases chemicals for smell, another tube that releases chemicals for taste, a fan, and a heater.
The helmet is being developed by researchers at five British universities.
References
Virtual cocoon Wikipedia(Text) CC BY-SA