You may already know this story, if you follow the Ig Nobel Awards, but I didn’t, and so I share it with you now.
Sweden and Russia nearly went to war because Herrings fart to communicate.
The trouble is, Herring farts sound an awful lot like the mechanical clicking of submarines when heard on a hydrophone, and in the early 1980s, a Russian nuclear sub had indeed slipped into Swedish waters, dangerously close to one of their naval bases. So when the Swedes heard those noises again in 1994, the Prime Minister sent Boris Yeltsin a nasty letter of complaint.
Before things could escalate any further, the boffins were called in.