I think it is some form of malabsorption
but may not due to disease process. intolerance to certain food may cause it .if it is more following fatty food intake? avoid the that may precipitate it.it will go on its way after a couples of weeks but consider some signs that will signal you to contact a physician.they are as follows
2. loss of appetite,weakness,fatigue
3. large, offensive, pale, greasy stools
4.Blood or excessive mucous in the stool.
this type of flatulence
may occur in gall stone disease,so have USG of abdomen to exclude it.