This message is communicated through the taste sense. And the touch sense definitely communicates too. Holding hands can reflect caring. A punch in the face can show anger. Messages are either verbal or non-verbal or a combination of the two.
Messages come through language or through other signs.
The process of communication takes place in some context that falls within a greater environment. For instance, communication may take place in a classroom at a university while other classes are ongoing and the library is being used, etc. It is important to focus on that context and to recognize who is the source and the receiver of the message and the channel being used. Even when an individual sleeps, communication is going on. Leave me alone.