Review (4/5): Its ok, not the nastiest smell though
First I broke one in my small bathroom, and ok not really that smelly, but good enough for others to hate it. So I tried the other two and broke them, its a little more powerful but this time the smell escaped my bathroom and ventured at least five feet away. My best advice is break them in a bottle like someone said and put it somewhere where it can release the smell. Like inside a heater vent!!! Anyways I plan on using this in that manner since I experienced this for myself. Not too strong but noticeable.
Update 2/11/13
If you want something really nasty look up Nasal Nausea. That one will linger all day!!!! ;)
Note: I am not responsible for any pranks you pull with this bottle. It may be small but it goes a long ways!!!!