An eight-second of clip of the boy's "whistling cough that has since been viewed over 65,000 times on Facebook.
An X-ray of the four-year-old's chest revealed that his left lung was hyperinflated, which can be caused by a blockage in the air passage to the lungs or medical conditions including asthma and cystic fibrosis, Live Science and Mayo Clinic report.
Doctors proceeded to perform a bronchoscopy, inserting a thin tube down his throat and into the left lung, where they unearthed and removed a "mysterious object a toy whistle. According to the boy's parents, their son had indeed been playing with a whistle before his coughing began, Live Science reports, and it was proved that he accidentally inhaled it.
[YOUTUBE]https://www.youtube.com/watch?v=0HPqIroU9Dw[/YOUTUBE]