Q. Suppose someone burps during Birchas HaMazon. Is there anything he can say or do in lieu of saying “Excuse me” and it will not be a Hefsek?

A. Horav Shlomo Miller Shlit’a suggests that he should politely cough, maybe clear his throat or courteously and apologetically wave a hand or express similarly his feelings of excuse and regret for his rudeness. (Note that in some cultures, burping is considered a sign of prize and thanks for the good food one consumed)

Rabbi A. Bartfeld as revised by Horav Shlomo Miller Shlit”a