As the frontman of one of the most popular rock bands of all time, Bono has one of the most influential voices in the industry. But little do fans know that the U2 singer alongside his son are affected by asthma. In fact Bono’s son Elijah Hewson - who is the lead singer of band Inhaler – named the band after his sister made a joke about his asthma. He said: "I had asthma for a while and people just kind of started calling us The Inhalers. It was something that stuck. It felt right."