Saliva

Saliva was one of a variety of bodily fluids that could be squeezed out of the rocks of Nebulax 4. (K9TV: The Bounty Hunter) Neo-Nitro, a variant of Nitro-9 which resembled boiled sweets, was activated using saliva. (NA: Shadowmind) The Moxx of Balhoon greeted people by giving them the gift of bodily salivas, basically spitting at them. (DW: The End of the World)