the Urban Dictionary has an entry for scarm, of some dubiety and a negative response; to wit,

scarm 3 up, 4 down
Noun; filth or waste.
Adj form (scarmy); describing how dirty or filthy a person or object is.
"That room is nothin but scarm"
"I feel scarmy - I need a showa"

perhaps the word you want is smarmy?!