There are several strategies to prevent or minimize aerophagia during CPAP therapy:  Adjust CPAP Pressure: Consult your healthcare provider to adjust your CPAP pressure settings. Lowering the pressure may reduce the amount of air entering the esophagus.  Use a BiPAP Machine: BiPAP machines offer different pressure settings for inhalation and exhalation, making it easier to breathe and reducing the risk of aerophagia.  Change Your Mask Type: Switching to a nasal pillow or nasal mask that promotes nasal breathing can help minimize mouth breathing and air swallowing.  Use a Chin Strap: A chin strap can help keep your mouth closed during sleep, reducing the likelihood of swallowing air.  Sleep Position: Sleeping on your side instead of your back can help reduce the risk of air entering the stomach.  Address Nasal Congestion: Treating nasal congestion with decongestants or nasal sprays can improve nasal breathing and reduce mouth breathing.  Consider Expiratory Pressure Relief (EPR): Using EPR settings on your CPAP machine can help lower the pressure during exhalation, making it easier to breathe out and reducing the likelihood of swallowing air.