12 week old with horrible smelling farts

My puppy farts at least once every 5 minutes and they smell so bad. Is this concerning?

Hello - this can indeed be concerning for the patient, because it implies that a lot of gas is either being swallowed or released in the bowels, which can this become uncomfortable.  Irregular bacterial loads / large amounts of plant matter / eating feaces has been thought to cause this, for example.  In extremis and particularly in some shapes of abdomen, large amounts of gas in the bowels can reflect or contribute to crises, from severe diarrhoea or hindgut pain to twisted guts.   Therefore, it is worth chatting to your vet.  Improving matters may be as simple as paying attention to the diet or worming.  However, particularly if ongoing, lumps and bumps within the guts, liver diseases and so on may be possibilities.