Thanks for your question on Health Care Magic.
I can understand your concern.
You had
choking and aspiration of food particles in trachea.
Your symptoms are associated with eating. So by mistake when we aspirate food particles in trachea (wind pipe), it gets blocked.
Due to this, we can not get air and hence we feel breathlessness.
During this episode our body is deprived of
oxygen and so black out is seen.
To overcome this, violent coughing (reflex) is done by the body to cough put food particle.
Once food particles are out, wind pipe is open and you can breath normally.
So better to chew properly while swallowing. Do not speak much while eating.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.