Green’s Dictionary of Slang

sputumnal adj.

[SE sputum, ‘saliva or spittle mixed with mucus or purulent matter, and expectorated in certain diseased states of the lungs, chest, or throat’ (OED)]

(Aus.) weird, unpleasant.

[Aus]T. Winton Lockie Leonard: Scumbuster (1995) 130: ‘This is totally sputumnal,’ said Egg.