SyncAroma is a system for synchronizing smells between users and to transmit the partner’s feeling and state.
Source: Tsujita, H., Tsukada, K., and Siio, I. 2008. SyncDecor. In Proceedings of the Working Conference on Advanced Visual Interfaces (AVI’08). ACM Press, 449–453.
http://orange.siio.jp/~alumnae/hitomi/syncdecor.html