Knob Goblin stink bomb
From A KoL Wiki
Template:Itemheader This small bomb, when lit, will unleash the stench of a dozen Knob Goblins. Which, by the way, is comparable to the stench of 144 regular goblins. You might call it a "gross of gross."
Type: combat item
Selling Price: 65 Meat.
Notes
Can be bought at Cobb's Knob Laboratory.
Reference
"Gross" means "12 dozen", ie. 144.