Chemical warfare is generally frowned upon by the world at large, but stink bombs play an important role in any prankster's (read: douchebag's) aresenal. The problem with stink bombs is, of course, collateral damage, specifically to the thrower. This custom-made bomb-launcher designed by Joerg Sprave would keep your nostrils safe from harm.
Pranks like this, and stink bombs particular, are sort of childish territory, but having a gun that can shoot stink bombs dozens of feet away seems pretty legitimately awesome even to me, a (technically) grown adult. You just have to be careful with that volatile ammunition.
You definintely don't want to shoot yourself in the foot, or anywhere near your foot, with that gun. [Slingshot Channel]