In some seasons of Love Island, there have been contestants who have been shown smoking on the show. However, it's worth noting that smoking is not actively encouraged or promoted on Love Island, and the show does not explicitly focus on or showcase smoking behaviors. The presence of smoking on the show largely depends on the personal choices of the individual contestants.
It's important to remember that Love Island is a produced reality TV show, and certain aspects of the contestants' behavior may be edited or selectively shown to create an engaging narrative. While smoking may be a personal choice made by some contestants, it is not a central theme or requirement of the show.