Smells, scents and stenches are a common feature in the messy world of sex. In animals, aromas such as pheromones are often used to attract and charm potential mates. But some male butterflies use sex smells for another purpose entirely: to deposit a stench on their coital partner so foul that other potential suitors will give her a wide berth.
Click here for original story, Male butterflies mark their mates with a stench to ‘turn off’ rival suitors
Source: Phys.org