Shitrus Share definition Flag When citrus air freshener is sprayed after defecating, it produces a smell that is a combination of the two of these. "Did you use the entire aerosol can? You smell like shitrus." Shitrus by UnFocused1 January 23, 2008 0 0 Get merch Get the Shitrus mug. Buy Now — $32.95 See more merch