My family and i are having sulfur smelling and tasting burps twice a month. they resolve but reappear..what is this..i also gave gurd and take nexium (esomeprazole).?

Evaluate diet/ water: It would be good to track and evaluate your diet to see if there are patterns- twice a month. Might be good to have your drinking water tested or use a filter. Gerd is gastro esophageal reflux disease, which would cause the burping regularly vs twice a month. Nexium (esomeprazole) should reduce the acidity. Simethicone will help with the gas and burping.