The stink bombs are mind boggling. The first test I, along with a friend, at an empty station. I threw the "cartridge" on the ground. about 6 feet from me way. After about 30 seconds, we received the stench. It smelled pretty cheesy at first, but the more time passed the more abysmally bad stank of stuff. When we came on Mr. closer to the Gestanksepiezentrum came to both of us up the vomit. In a closed room, I would not imagine how bad it will stink to me. There are even the corners at Frankfurt Hauptbahnhof still fragrant.