Vaginal Yeast Infection (Candidiasis): This is a common condition that can cause odorless vaginal discharge and may be accompanied by flu-like symptoms such as fever and general malaise, especially if the infection is severe or the patient's immune system is compromised.

Bacterial Vaginosis (BV): Although BV typically presents with a fishy odor, some cases can be odorless. It can also be associated with flu-like symptoms if there is an accompanying infection or if the patient's immune response is heightened.
Trichomoniasis: This sexually transmitted infection can cause vaginal discharge, which may or may not have an odor, and can be accompanied by systemic symptoms like fever and malaise.
Pelvic Inflammatory Disease (PID): PID can cause a variety of symptoms including vaginal discharge, fever, and flu-like symptoms. The discharge may not always have a strong odor.

Ectopic Pregnancy: Although less common, an ectopic pregnancy can present with vaginal discharge and flu-like symptoms, along with abdominal pain. This condition is life-threatening and requires immediate medical attention.
Ovarian Torsion: This is a rare but serious condition that can cause severe abdominal pain, fever, and possibly vaginal discharge if there is associated infection or irritation. It requires emergency medical intervention.
Septic Abortion: In cases where there has been an attempt to induce an abortion, septic abortion can occur, leading to severe infection, flu-like symptoms, and potentially life-threatening complications.

Lymphogranuloma Venereum (LGV): A sexually transmitted infection caused by certain types of Chlamydia trachomatis, which can lead to symptoms including vaginal discharge, fever, and flu-like symptoms in its later stages.
Genital Tuberculosis: A rare condition in many parts of the world, genital TB can cause a variety of symptoms including vaginal discharge, abdominal pain, and systemic symptoms like fever and weight loss.