Suiko

The Suiko is a liquid Mushi.

Description
Suiko is clear and colourless. Found primarily in old water veins, ponds and even in wells.

If one mistakes it for water and keeps drinking it, pretty soon he/she won't be able to breathe without being in contact with the Mushi, and the person's body turns transparent. Eventually the body turns into liquid and flows away.

Some other effects on coming in contact with a Suiko is that one's hair turns earthly green as witnessed in the case of Io.