When used as a noun a fart refers to “an expulsion of intestinal gas1” or “An emission of wind from the anus; an instance of breaking wind2”. So, I would say no it is not because it is defined as leaving the body. While in the body it is flatus which is gas in or from the stomach or intestines.
When used as a noun a fart refers to “an expulsion of intestinal gas1” or “An emission of wind from the anus; an instance of breaking wind2”. So, I would say no it is not because it is defined as leaving the body. While in the body it is flatus which is gas in or from the stomach or intestines.
1Merriam-Webster
2 OED