I made a "spray grenade" to my friend once. Attached a Ty-wrap to a bottle of Febreeze (trigger in) and throw it in his room while he was there. He was pretty quick to seek scissors and cut it but I can imagine it worse without his quick thinking and a worse scent.
Man, I remember middle/high school, and the axe bomb. Get an unreasonable amount of axe bodyspray cans, tape the nozzle down, and put them in a room where nobody currently is, but will be.