Not merely「feelings」or「thoughts」or a mention of what is in one's「heart」but actual defilement of a female and her reproductive organs by passing along an infection, and/or spurting one's own genetic material into a fertile zone thus facilitating possible conception. Gonorrhea in females is generally not as easy to detect as in males, hence an infection can progress unnoticed until the female is too destroyed to conceive, or, pass unnoticed from her to the client until about four days after is it too late.
　The referent of CLUMSY is「clumse」meaning「to be stiff from cold」hence uncoordinated. Other given meanings of DIRTY and DEFILED seem to stem from「emphasis, drips from spewing penis within both cavities」on each side of the female perineum, or, simply schtupping (ejaculation into a birth canal or other attainable orifice) a bunny, and in that sense, perhaps defiling oneself in the process by catching the clap and defiling one's own reproductive organs: STUPID, MARKED LACK OF INTELLIGENCE, FOOLISH, CARELESS, BLUNDERING, BUNGLING.
In its original parlance, describing a thing or situation as "smells fishy" did refer to having probable cause for extreme doubt and suspicion, but most folks do not realize why innocuous fish are so maligned in this manner. A fishy or pungent-smelling discharge from the vagina or penis may signify the presence of an infection, so caution was advised...and still is today.
　「Trichomoniasis (commonly referred to as 'trich') is the most common, curable sexually transmitted disease in the world. …Trichomoniasis is caused by a one-celled parasite, Trichomonas vaginalis. Trichomoniasis affects both women and men. The most common location of infection in women is the vagina, and in men it is the urethra. In women, the symptoms of trichomoniasis may include yellow-green vaginal discharge, fishy odor, pain during urination and sexual intercourse, and genital itching or irritation. Men usually do not show trichomoniasis symptoms, but some may experience discharge from the penis or burning during urination or ejaculation.」
　　[　link now-dead was https://www.trichomoniasis.org/ 2013-09-27　so instead see https://sacace.com/sexually-transmitted-diseases.htm　2023-05-17　]　 (see 鮅).
　Roughly one out of three women ages 14-49 in the United States develop a vaginal bacterial imbalance known as bacterial vaginosis (BV) during their lifetime. BV is characterized by unpleasant odors, and potentially painful side effects, as well as the risk of associated health issues later in life. 「Bacterial vaginosis (BV) is the name of a condition in women where the normal balance of bacteria in the vagina is disrupted and replaced by an overgrowth of certain bacteria. It is sometimes accompanied by discharge, odor, pain, itching, or burning. How common is bacterial vaginosis? Bacterial vaginosis (BV) is the most common vaginal infection in women of childbearing age. In the United States, BV is common in pregnant women. …Not much is known about how women get BV. …However, some activities or behaviors can upset the normal balance of bacteria in the vagina and put women at increased risk including: Having a new sex partner or multiple sex partners. …It is not clear what role sexual activity plays in the development of BV. Women do not get BV from toilet seats, bedding, swimming pools, or from touching objects around them. Women who have never had sexual intercourse may also be affected. What are the signs and symptoms of bacterial vaginosis? Women with BV may have an abnormal vaginal discharge with an unpleasant odor. Some women report a strong fish-like odor, especially after intercourse.」
　　[　https://www.my-obgyn.org/bacterial-vaginosis.php　]　
　　[　now-dead link was https://www.cdc.gov/std/bv/stdfact-bacterial-vaginosis.htm 2013-09-27　so instead see　[　https://www.cdc.gov/std/bv/stdfact-bacterial-vaginosis.htm　2023-05-18　]　
　「If you consider risky sexual behavior a nonissue, remember this: Over one million people around the world acquire a sexually transmitted disease (STD) every day. '…We often hear the words herpes, gonorrhea, and chlamydia in a comedic context, but anyone who has an STD knows it's no laughing matter,' Superdrug explained. 'It's something you may have to live with for the rest of your life. It's scary. It's embarrassing. It's often confusing. But if you're one of those people, you're not alone. Not even close.' 」
　　[　https://www.medicaldaily.com/pulse/std-prevalence-across-world-how-std-statistics-compare-across-time-and-space-325574 2017-03-16　]　
　「One in two sexually active persons will contract an STI by age 25. …Researchers estimate that at least 80% of sexually active people will have an HPV infection at some point in their lifetime. CDC data for 2013–2014 show that about 42% of men and 40% of women aged 18-59 had genital HPV at that time. …About 1 in 8 people aged 14-49 in the U.S. has genital herpes. …Symptoms of genital herpes often go unnoticed. Most people with genital herpes—close to 90%—don't know they have the infection. Globally, researchers estimate that about two-thirds of the population under age 50—more than 3.7 billion people—are infected with HSV-1. Some 140 million people aged 15-49 are infected with genital HSV-1, primarily in the Americas, Europe and Western Pacific. …In 2015, rates of the three most common reportable STIs—chlamydia, gonorrhea and syphilis—reached a record high level. The approximately 1.5 million reported cases of chlamydia represent the highest number of annual cases of any condition ever reported to CDC. …Young people ages 15 to 24 years old accounted for 65% of chlamydia diagnoses and 50% of gonorrhea diagnoses in 2015.」And so on.
　　[　https://oklahoma.gov/content/dam/ok/en/health/health2/documents/std-trends-2015-cdc.pdf 2019-12-04　]　

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Unihan extended: stupid; clumsy; to dirty, defile