Salmon has been known to make people who eat it a bit gassy because it a very oily type of fish. In some cases it can also gas diarrhea and bloating, though this is not true for everyone who eats it. Some people who have an allergic reaction to this food can have adverse reactions such as gas and diarrhea.
It is important that if you consistently experience these symptoms after eating salmon that you limit how much you eat or cut it out of y our diet altogether. For certain people salmon does not cause gas but for others it can be quite severe, especially if there is an allergic reaction.