smell similar to sweaty feet, rotten cheese or vomit. When butter goes rancid, short-chain fatty acid butyric acid is liberated from the glyceride by hydrolysis, leading to this kind of unpleasant odor. Human sweat can have this odor because of Corynebacterium that metabolizes animal fats excreted on skin. It can also be created from amino acids in proteins (valine, leucine, and isoleucine). Cows can have this smell if they are on high-grain or high-starch diets vs hay diets. According to a Swiss study published in "Chemical Senses"in 2008, men might have more of butyric acid and similar chemicals in their sweat, while women have more sulfur giving them smells similar to onions or grapefruit.
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organic fluid, also known as seminal fluid, secreted by sexual glands and other sexual organs of a male. Contains spermatozoa, proteolytic and other enzymes as well as fructose (2-5 mg per mL semen, more than 2.4 mg or 13 µmol per ejaculate) promoting the survival of spermatozoa and providing a medium through which they can move or "swim". Texture of semen can be thick, chunky or clumpy. It is usually thinner with more frequent ejaculation. Normal and healthy semen could vary in color from opaque white and transparent to slightly yellowish or grayish. Basic amines such as putrescine, spermine, spermidine and cadaverine are responsible for the smell and flavor of semen. It can smell somewhat like bleach or chlorine, slightly sour (some compare it to pancake batter), salty or even sweetish. Anecdotal evidence points to pineapple juice and other food ingredients in diet as sources of sweeter smell. Foul odor and smell is often an indication of infection, and so could be color (brown or red). Brown semen could be also caused by trauma, forced ejaculation and diets high in protein and vitamin B content. Deep yellow color could be also caused by infection, not ejaculating for a long time or foods rich in sulfur - like garlic or onions, and B2 vitamin. Vitamin C, E, folate and zinc can boost sperm DNA quality - at least in older men (44+). Omega-3 fatty acids, walnuts and honey are among quality boosters too. BPA (bisphenol A) found in polycarbonate plastic bottles and food containers, polluted air and smoking can decrease the quality of sperm.
Offensive smell resembling rotten eggs or other sulfury off-flavors.
Sulfur mineral itself has no scent. The odor of rotten eggs actually comes from hydrogen sulfide (H2S) which is a by product of sulfur - it can be produced in water (including humidity in the air). Volcanoes and hot springs could produce H2S via the hydrolysis of sulfide minerals. The odor can be detected at 2 parts per bilion (ppb). Ninety-five percent of pollution related sulfur oxide emissions are in the form of sulfur dioxide (SO2), a heavy, colorless gas with an odor like just struck matches. Most thiols (compounds containing an SH functional group) smell like variations on garlic or skunk. Sulfides have the structure R-S-R′, and are therefore the sulfur analogues of ethers. Hydrogen sulfide smells like 'rotten egg', while Dimethyl sulfide has a smell that is usually described as 'rotting cabbage', 'cooked cauliflower' or just plain 'unpleasant. Dimethyl Disulfide smells like rotting meat. Methanethiol (or methyl mercaptan - CH3SH) smells like rotten cabbage or urine after eating asparagus. Sulfur-reducing bacteria, which use sulfur as an energy source, are the primary producers of large quantities of hydrogen sulfide. These bacteria chemically change natural sulfates in water to hydrogen sulfide. Staphylococcus and Corynebacterium spp. are the most abundant organisms colonizing moist areas of the body and emitting sulfury odors. Odor originating from the vagina. It's normal to have a slight vaginal odor,t with stronger and more subtle variations of individually-unique smell appearing during different parts of menstrual cycle. Normal odor is somewhat salty, yeasty, resembling sour milk, even a little bit fishy or onion-like, more so if eating onions and garlic, meat and drinking coffee. But, a strong vaginal odor — for instance, a strong "fishy" smell — might be abnormal and could indicate a problem. Other odors could be acidic, like vinegar, ammonia, garlic, cheese, body odor, urine, bread, bleach, feces, sweat, metal, feet, garbage, and rotten meat. An abnormal vaginal odor is usually associated with other vaginal signs and symptoms such as itching, burning, irritation or discharge. Common causes of abnormal vaginal odor include Bacterial vaginosis, secondary TMAU (around periods), Poor hygiene, Retained or forgotten tampon, Trichomoniasis. Less commonly, abnormal vaginal odor may result from rectovaginal fistula, cervical or vaginal cancer a physiological need for food, the consequence of food deprivation or timing of external clocks, could be also caused by triggers of learned behavior. Emotional hunger is usually triggered by images of food or emotions and is associated with specific food cravings. Real hunger is more physiological, and appetite is more psychological. Symptoms of food deprivation can start 3-5 hours after eating and build up, progressing from feeling extremely ravenous to experiencing discomfort and pains in the stomach, weakness, and dizziness. 12-16 hours of fasting marks the beginning of noticeable decline in attention, memory, problem solving abilities. Eventually it affects all mental functions as the brain is continually deprived of necessary nutrients. Severe food deprivation leads to vivid hallucinations, confusion, vertigo, and eventually cardiac arrest. See also Fat cravings, Sugar cravings, Salt cravings, Craving acidic foods, Feeling hungry, Feeling thirsty Healthy skin appearance. Skin is the outermost tissue of the body with an area of approximately 16, 000 cm2 for an adult and represents about 8% of the body weight. It has a very complex structure that consists of many components. Cells, fibers and other components make up several different layers that give skin a multi-layered structure. Veins, capillaries and nerves form vast networks inside this structure. In addition, hairs stick out from the inside of skin. Numerous fine hair furrows are scattered over the surface of skin. Except for a few specific localized areas, human skin normally ranges from pH 4.2–6.0 due to the abundance of fatty acids that are present. Skin should be slightly acidic - women with an alkaline stratum corneum (the skin's outermost layer) develop more fine lines and crow's-feet—and are more prone to sun damage—than those with acidic skin. On the other hand, excess fat could attract microbes causing acne. temporary inability to distinguish a particular odor after a prolonged exposure; condition in which a person's nose adapts to continuous prolonged exposure to particular odors, so is no longer able to detect that odors. Such adaptation can happen rapidly and recovery may be fast or slow depending on the initial stimulus. Olfactory fatigue involves adaptation of nervous system in addition to receptor adaptation. One example is losing the ability to smell and distinguish wine bouquet after sniffing at wines continuously for an extended period of time; or being immune to our own body odor. waxy and possibly odorous, natural lubricant cleaning genitals, the end result of dead skin cells and fatty oils primarily shed from certain parts of genitalia: the inner cavity of the foreskin in men and the folds of the labia minora and clitoris in women. With regular hygiene, smegma is transparent and unnoticeable, otherwise it becomes opaque, white or yellow, with strong fish-like smell that comes from the bacterial breakdown of the oils. On exposure smegma readily undergoes changes in chemical composition and physical consistency, differing in color from yellow to white and varying at different stages of life. Smegma may provide a place to breed for harmless bacteria, but it could also harbor pathogens, more likely in uncircumcised men. Gram-negative bacteria such as Escherichia coli, Pseudomonas spp., Proteus spp., and Klebsiella spp. are predominantly found in and around the urethra (UR), with circumcision increasing the presence of coagulase-negative Staphylococcus spp. and decreasing the number of gram-negative pathogens and enterococci. After circumcision, relatively low levels of Staphylococcus aureus and no changes in S. aureus prevalence are reported. In one study, the culture of organisms from the coronal sulcus yielded 41.6% colonized with S. aureus, 3.5% with Enterococcus spp., 22.9% with a gram-negative bacterium (E. coli, Klebsiella spp., or Pseudomonas aeruginosa), 1.6% with an anaerobe (Clostridium), 0.3% with a yeast (Candida albicans), and 60.0% with any pathogen. A coagulase-negative Staphylococcus sp. was present in 97.4% of all study participants. Gram-negative pathogens were more prevalent among HIV-infected participants (22.7%) and TB-infected individuals (30.4%) as compared with healthy men (6.0%) (P=0.003). Urethral colonization demonstrated similar results and patterns. a watery, typically yellowish fluid consisting of liquid waste substances removed from the blood by the kidneys. Urination, also known as micturition, voiding, peeing, and more rarely, emiction, is the process of disposing of urine from the urinary bladder through the urethra to the outside of the body. Urine is mostly composed of water (>95%) with urea (9.3 g/L), chloride (1.87 g/L), sodium (1.17 g/L), potassium (0.750 g/L), creatinine (0.670 g/L) and other inorganic and organic compounds. Normal urine is also straw-yellow in color. A strong ammonia smell and dark yellow to urine often indicates simple dehydration, but foul smell and cloudy appearance can also indicate bacterial infection. Other strong urine smells are caused by certain foods such as asparagus, or by medications or vitamins. In uncontrolled diabetes, urine has a sweet odor. Musty-smelling urine could indicate thyroid disease or other metabolic disorders. A burned caramel smell to urine is caused by a rare condition - maple syrup urine disease. state when body muscles do not move (although eye muscles could, similar to REM atonia), yet the person is aware. Usually occurs when falling asleep or when awakening. The paralysis can last from several seconds to several minutes, with some rare cases being hours, accompanied by panic symptoms. Contributing factors include sleeping in a face upwards position (supine), increased stress, sudden environmental or lifestyle changes (including diet and activities such as socializing), lucid dreams (awareness during dreaming), lack of sleep, irregular sleeping patterns, age (it's more common in teenagers and young adults), excessive alcohol or drugs. People with narcolepsy, dyssomnias or other sleep disorders and those prone to cataplexy - sudden fatigue brought on by strong emotions - are more likely to experience sleep paralysis. |
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