The fluid is excreted from the urethra during climax. This by no means equates female ejaculation to urine. Nor does it indicate that it is even closely related to urine. It is virtually impossible to urinate during orgasm, in men as well as women unless there is a weak pubococcygenus (pc) muscle or other underlying medical issues.
The paraurethral/skenes gland also referred to as the G-spot produces female ejaculate fluid. These glands open into the urethra. During sexual stimulation they swell and fill with fluid. The muscle contractions during orgasm force the fluid into the urethra causing the ejaculation or expulsion of the fluids.
Chemical studies on the female ejaculate show that it is very much like male prostrate fluid, semen without the sperm. The major components are glucose and prostate acid phosphates with trace amounts of creatinine and urine.
Female ejaculation is usually clear with a watery consistency; it is occasionally thicker and somewhat milky. The smell is usually odorless or slightly sweet, in no way similar to urine. The taste varies from sweet, salty, bitter and sour or a combination of two or more. Like male ejaculate it depends on diet and a host of other biological factors.