My ds is almost 4 mths old and from the day he was born he has always farted loudly. However, during the last few weeks we do not need to hear it because the smell engulfs us almost immediately. He has always been bf so in a way it might be something in my diet but I cant think what this might be and I have not changed my diet at all. Should this be a cause for concern especially as the smell is really bad that people assume that he has soiled himself only to find out that this is not the case. Help!