In 2004, Ireland became the first country to enact national smoke-free legislation. Currently, 100% smoke-free legislation protects more than 200 million people worldwide, including national laws in Afghanistan, Iran, Kenya, New Zealand, the United Kingdom, and Uruguay, and subnational laws in Argentina, Australia, Canada, North Korea, and the United States.20 Smoke-free laws offer multiple benefits: improved air quality, reduced morbidity and premature mortality, and a decrease in tobacco consumption. Public opinion strongly favors smoke-free laws, particularly among young people in the Americas, Europe, and eastern Mediterranean.21 Additionally, smoke-free laws have not had an adverse economic effect on bars and restaurants, as the tobacco and service industries had predicted.22