Our expert says:
Yes it can, though maybe more often caused by one's reaction to certain foods. Is this entirely new ( or has it been happening for years ? ) Stress can cause various varieties of muscle tensions, and that may make you a bit more likely to expel air ( and some counselling to reduce the stresing could help ). But Stress won't lead you to produce more air to expel. That tends to be related more to diet.
At the other end, air that one burps is usually just air one swallowed, and a behavioural psychologist cam help you to learn to stop swallowing ir and to stop burping ( which can become a nervous habit ).
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