
Some people have reported that their perfumes smell like ammonia, which can be caused by a number of factors. Firstly, certain ingredients in perfumes, such as black currant, honey, and Ambroxan, are known to have an ammonia-like scent. Additionally, individual body chemistry, diet, and the use of other personal care products can interact with the perfume, resulting in an ammonia-like smell. Furthermore, health conditions such as kidney disease, diabetes, and hyperhidrosis can affect how the body processes waste, leading to an ammonia scent in sweat that mixes with the perfume. Dehydration, stress, and exercise can also contribute to increased ammonia concentrations in sweat. Lastly, some individuals may have a chemical intolerance to certain scents, resulting in a strong and persistent ammonia perception.
| Characteristics | Values |
|---|---|
| Cause of ammonia-like smell in perfumes | Black currant, honey, iris, ambroxan, civet, diet, body chemistry, personal care products, dehydration, exercise, health conditions |
| Perfumes with ammonia-like smell | Mademoiselle, Black Orchid, Midnight Poison, Coco, No 5, Chanel Chance |
| Perfumes with notes of ambroxan | BR 540, Angel Muse Eau de Toilette Mugler |
| Brands to avoid blind buying | Juliette Has a Gun, Montale, Mancera, Armani |
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What You'll Learn
- The chemical compound, Ambroxan, is used to enhance perfumes' performance
- Black currant notes in perfumes can smell like ammonia
- Dehydration can cause a stronger ammonia smell in perfumes
- High-protein diets can result in an ammonia smell in sweat
- Some people are chemically intolerant to ammonia in perfumes

The chemical compound, Ambroxan, is used to enhance perfumes' performance
The chemical compound Ambroxan, also known as Ambroxide, is a synthetic molecule that is derived from ambrein, the primary odorant of ambergris, a rare sperm whale discharge. It has a dry, musky, woody, and delicately oceanic scent.
Ambroxan is used in perfumery to enhance the performance of perfumes. Its versatility and potency make it a valuable ingredient for perfumers. It can be used as a base note to provide longevity, anchoring top notes such as citrus or bergamot. As a fixative, it slows the evaporation of volatile components, extending the lifespan of the scent. It also blends seamlessly with javanol, amber, and marine notes.
Additionally, Ambroxan is known for its ability to amplify personal pheromones, creating a captivating fragrance that is unique to each individual. This quality has made it a popular ingredient in pheromone perfumes, which aim to enhance natural allure and create memorable impressions.
While Ambroxan is generally valued for its scent and effects, some people find it unpleasant or reminiscent of ammonia or rubbing alcohol. This perception may be influenced by individual body chemistry, diet, and the use of other personal care products.
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Black currant notes in perfumes can smell like ammonia
It is common knowledge in the perfume industry that black currant notes in perfumes can smell like ammonia, which some people describe as cat urine or cat piss. This is due to the specialized hairs (glandular trichomes) that are found on the surface of about 30% of the black currant plant, rendering the characteristic "cat" smell.
Black currant is a light, fruity, and woody note with a rich, sensual, and harmonious animal-like aspect that lies between green and red fruit scents. Its tart and sugary properties make it a popular choice in fruity, floral, citrus, and oriental (or ambery) scents. Black currant is often blended with an array of other notes, such as mandarin, grapefruit, lily, jasmine, tuberose, amber, patchouli, musk, and vanilla.
Some people may find the scent of black currant in perfumes unpleasant or repulsive, especially those who are cat owners. The combination of black currant with other personal care products, soaps, water, or laundry detergent may also contribute to an ammonia-like smell. Additionally, individual body chemistry and diet can affect how a perfume smells on the skin.
It is worth noting that not everyone perceives the scent of black currant as ammonia-like. Some people may naturally shy away from certain notes, such as black currant, due to their body chemistry.
In conclusion, black currant notes in perfumes can sometimes smell like ammonia due to the natural compounds present in the black currant plant. This scent may be enhanced or altered by individual body chemistry, diet, and other factors, resulting in an ammonia-like smell that some may find unpleasant.
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Dehydration can cause a stronger ammonia smell in perfumes
Dehydration can be a cause for concern for a multitude of reasons, one of which is its ability to cause a stronger ammonia smell in perfumes. Dehydration occurs when an individual does not drink enough fluids or experiences significant fluid loss due to vomiting or diarrhea. This can lead to an increased concentration of ammonia in the body, resulting in a stronger ammonia odour.
The human body naturally produces ammonia when it breaks down protein into amino acids. This process is important for energy production, especially when carbohydrate levels are low and the body relies on protein for energy. The ammonia is then converted into urea by the liver and excreted through urine or sweat. However, when the body is dehydrated, there may not be enough water to effectively dilute the ammonia, leading to a stronger ammonia smell.
Additionally, dehydration can impact the sense of smell. Olfactory sensitivity can be heightened when dehydrated, which may contribute to an increased perception of the ammonia scent in perfumes. Personal body chemistry, diet, and other personal care products can also influence how a perfume smells on an individual. For example, certain perfumes may interact with body chemistry to produce an ammonia-like scent, while the use of specific soaps or laundry detergents may alter the scent of a perfume.
Furthermore, exercise can affect ammonia levels in the body. Increased physical activity can lead to higher concentrations of ammonia in sweat, especially on the upper arms. This may be noticeable when starting to exercise or after completing a workout. Therefore, individuals who engage in regular physical activity may be more prone to detecting ammonia-like scents in their perfumes due to heightened ammonia levels in their sweat.
Understanding the role of dehydration in amplifying the ammonia smell in perfumes can help individuals manage their fluid intake and potentially reduce the occurrence of this unpleasant scent. It is recommended that most adults consume between 60-80 ounces of fluid daily to maintain proper hydration and potentially mitigate the ammonia odour.
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High-protein diets can result in an ammonia smell in sweat
Ammonia is a compound of nitrogen and hydrogen. It is a colorless gas with a strong odor that smells like urine or sweat. Ammonia is naturally found in water, soil, and the air, and is also present in plants, animals, and the human body.
The human body makes ammonia when it breaks down protein into amino acids. The liver then converts ammonia into urea, which is dispelled from the body through urine or sweat. If the body produces urea faster than the kidneys can excrete it, some of the urea is released through sweat, where it breaks down into ammonia.
In addition to diet, other factors such as exercise, dehydration, and health conditions like kidney disease and diabetes can also contribute to ammonia-smelling sweat. For example, a 2020 study found that ammonia concentrations in sweat were higher after exercise. Dehydration can also make sweat smell more like ammonia because there is not enough water to dilute the ammonia.
If you are experiencing ammonia-scented sweat, it is recommended to increase your carbohydrate intake and drink more water. If this does not help, it is advised to consult a doctor to rule out any underlying health conditions.
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Some people are chemically intolerant to ammonia in perfumes
Research has shown that certain smells activate olfactory cells located toward the front of the nose. These cells are sensitive to specific chemicals, such as ammonia, which the body may interpret as dangerous. The cells then send electrical signals to other cells, eventually relaying sensory information to the trigeminal nerve, which controls the gag reflex.
In a 2012 study, psychology researcher Linus Andersson of Umea University found that some people are chemically intolerant to certain scents and that these individuals do not adjust to unpleasant odors over time. Brain activity images of the participants showed that brain activity did not change over time—the smell did not become more tolerable. Instead, the smell was perceived as getting stronger, even though its concentration remained unchanged.
Additionally, people with chemical intolerances are more likely to have smell intolerances to other irritants, such as capsaicin, the active component of chili peppers. For sensitive individuals, both capsaicin and offensive odors trigger a physical reaction that does not subside until the irritant is removed.
It is important to note that ammonia is commonly found in perfumes as a fixative to enhance their performance or as a substitute for ambergris. However, for those with chemical intolerances, it can cause unpleasant reactions.
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Frequently asked questions
Some perfume ingredients, such as black currant, honey, and Ambroxan, can smell like ammonia or "cat pee". Additionally, the scent of a perfume may change when it interacts with your body chemistry, diet, or other personal care products.
A variety of factors can cause sweat to smell like ammonia, including diet, dehydration, exercise, and health conditions. For example, high-protein, low-carbohydrate diets can result in increased ammonia content in sweat. Dehydration can also cause sweat to smell like ammonia because the body needs water to dilute and eliminate ammonia.
To prevent ammonia-smelling sweat, it is recommended to increase carbohydrate intake, stay hydrated, and balance workout intensity with rest. Addressing any underlying health issues, such as kidney disease, diabetes, or hyperhidrosis, is also important.











































