Historical clue formulations

• Windpipe — 2025-10-20
• Windpipe — 2023-03-20
• Windpipe — 2020-12-16
• Wrong pipe, so to speak — 2019-07-07
• Windpipe — 2016-02-02
• Airway — 2012-06-14
• Windpipe — 2010-12-12
• Choking spot — 2008-12-14
• Bronchoscopist's view — 2008-05-02
• Breathing tube — 2007-05-27
• Airway — 2001-11-01
• Neighbor of the larynx — 1999-01-17