The body's reflex when something blocks the airway is louder than people remember — a hard hack from the diaphragm, then a longer thinner wheeze trying to draw air past whatever's in the way. 20 choking sound effect takes here cover both halves cleanly: gagging on liquid, dry coughing fits with the catch in the throat audible, the breathless gasping that signals the airway clearing again, and the panicked closed-mouth grunt of someone in real Heimlich distress.
Medical training videos use the realistic distress takes because actors usually overplay it — the actual sound is smaller and more frightening. Drama and horror editors reach for the longer struggle clips when a scene needs threat without spelling it out. Game cutscene work uses the shorter choking sounds as hit-reactions, where a half-second of strangled breath sells damage better than another grunt. Take what fits the moment — the whole library is a free download, no signup or attribution required.