窒息 (zhì xī): 목이 막히다.

While eating fish, he accidentally swallowed a fishbone that got stuck in his throat and immediately felt a choking sensation, which frightened his family into taking him to the hospital right away.

The small room had its windows tightly shut and no air circulation; after staying there a while, he felt almost suffocated, so he quickly opened the door and went outside to breathe fresh air.

Upon hearing the news of his mother's sudden death, he felt a wave of suffocation, his chest tightened, and he couldn't speak, only standing there in a daze.

In the last minute of the game, the opponent scored two goals in a row to take the lead, making the atmosphere in the entire stadium so tense that it was suffocating, and the audience held their breath.

He is allergic to cat fur; as soon as he entered his friend's house where a cat was kept, he sneezed nonstop and then began to choke, so his friend quickly took him to the hospital.