What happens if a cat smells lavender essential oil? - The Environmental Literacy Council (2025)

The simple answer: it’s not good. While the scent of lavender might be relaxing to humans, for cats, inhaling lavender essential oil can be dangerous, potentially leading to a range of adverse health effects. Cats lack the necessary liver enzymes to effectively process many compounds found in essential oils, including lavender. This means that the oil, whether inhaled, ingested, or absorbed through the skin, can accumulate in their system and cause significant toxicity.

Exposure to lavender essential oil, even just through inhalation, can cause symptoms ranging from mild discomfort to severe, life-threatening conditions. Because of their unique physiology, cats are particularly vulnerable to the toxic effects of essential oils. Let’s break down exactly what happens when a cat is exposed to lavender essential oil.

The Dangers of Inhaling Lavender Essential Oil for Cats

How it Affects Their System

When a cat inhales lavender essential oil, the volatile compounds are quickly absorbed into their bloodstream through their lungs. Unlike humans, cats have a limited ability to metabolize these compounds effectively. This is because they lack certain glucuronidase enzymes in their liver which are crucial for breaking down and eliminating these substances. This leads to a buildup of the oil in their system, primarily within the liver, which then causes significant stress and damage.

Toxic Reactions and Their Symptoms

The result of this accumulation can manifest in several ways. Initially, you might notice more mild symptoms, such as:

• Respiratory issues: Coughing, wheezing, and difficulty breathing are common indicators of irritation and inflammation of the respiratory system.
• Gastrointestinal upset: This can appear as drooling, vomiting, and diarrhea.
• Behavioral changes: The cat may become lethargic, depressed, or display a loss of coordination.

However, without intervention, the situation can quickly escalate to more severe symptoms, including:

• Muscle tremors and seizures: These are signs that the nervous system is significantly affected and that the situation is becoming critical.
• Liver damage and failure: The toxic buildup within the liver can lead to serious organ damage, possibly resulting in liver failure.
• Respiratory failure: Severe respiratory distress may lead to an inability to breathe and can be fatal.
• Even Death: In extreme situations, if the toxicity is severe and left untreated, it can ultimately lead to death.

Why is Lavender Essential Oil So Dangerous for Cats?

Limited Liver Function

As previously mentioned, the primary issue is the cat’s inability to metabolize the compounds effectively. Their liver, which is the main organ responsible for processing and eliminating toxins, is less equipped to handle the complex compounds found in essential oils like lavender. This leads to the dangerous buildup and the subsequent toxic reactions.

Rapid Absorption

Another factor that increases the risk is how quickly cats absorb essential oils. Whether through inhalation, skin contact (if oil droplets settle on their fur), or ingestion (through grooming), essential oils are rapidly absorbed into their system. This speed of absorption means that the toxic effects can manifest quickly, making early intervention crucial.

Fragile Respiratory System

Cats have sensitive respiratory systems, and the concentrated nature of essential oils can irritate their airways. Even small amounts of inhaled lavender oil can trigger inflammation and breathing difficulties. This makes essential oil diffusers particularly dangerous, as they disperse fine droplets of the oil into the air, making inhalation unavoidable for any cats within the vicinity.

Prevention is the Best Medicine

Given the potential risks, it’s best to completely avoid exposing your cat to lavender essential oil in any form. This means avoiding:

• Diffusers: Do not use essential oil diffusers in areas accessible to your cat.
• Scented products: Avoid using lavender-scented candles, sprays, or air fresheners where your cat spends time.
• Direct application: Never apply essential oils directly to your cat’s fur or skin.
• Household cleaning products: Be vigilant with checking ingredients in cleaning products to ensure they do not contain essential oils.
• Potpourri: Keep liquid potpourri and other fragranced products out of your cat’s reach.

If you suspect that your cat has been exposed to lavender essential oil, immediately consult your veterinarian. Early detection and treatment can significantly improve the chances of a positive outcome.

Frequently Asked Questions (FAQs)

1. Can cats be around lavender plants?

While lavender plants themselves are less dangerous than the concentrated oils, it’s best to exercise caution. Some cats might be attracted to the plants, and chewing on them could cause mild digestive upset. However, the concentration of the oil in the plant is much lower than in essential oil form, meaning that the risk is significantly decreased. Still, keep an eye on your cat to make sure that they don’t ingest the plant, particularly if they begin to show signs of irritation or digestive issues.

2. Is lavender Febreze safe for cats?

While Febreze is generally not considered highly toxic, it can cause mild irritation. The ASPCA notes that if your pet has sensitive skin, direct contact with wet Febreze might cause skin irritation, and ingestion may lead to minor stomach upset. However, it is best to avoid using any fragranced product, especially those containing essential oils, near your cat.

3. What scents are harmful for cats?

Many scents are toxic to cats, including cinnamon, citrus, pennyroyal, peppermint, pine, sweet birch, tea tree (melaleuca), wintergreen, and ylang-ylang. Always check ingredient labels on household products and personal care items to ensure your cat is safe. It is generally best to choose unscented products, where possible.

4. Are all essential oils toxic to cats?

While many are, not all essential oils are equally toxic. Some are less toxic than others, but it is best to avoid all essential oils to be safe. However, many essential oils are known to be particularly dangerous to cats. Always err on the side of caution and keep all essential oils away from your cat.

5. What are the early signs of essential oil poisoning in cats?

Early signs include difficulty breathing, drooling, lethargy, loss of coordination, and vomiting. If you observe any of these symptoms, seek veterinary care immediately. These symptoms can appear quickly after even limited exposure.

6. Can cats have essential oils on their skin?

Never apply essential oils directly to your cat’s skin. This can lead to rapid absorption and toxic effects. Even if it is a very diluted form, it is best to avoid any direct contact between essential oils and your cat’s skin.

7. Is it safe to diffuse essential oils in a home with cats?

No, it is generally not safe to diffuse essential oils in a home with cats. The microdroplets dispersed can easily be inhaled, and can also settle on their fur, increasing their exposure through skin absorption and ingestion during grooming. If you have cats, it is best to avoid using diffusers.

8. Why does my cat seem to enjoy the smell of lavender sometimes?

While some cats may show an initial interest in the scent of lavender, it’s more likely that they are reacting to the plant, not the essential oil. Many cats may rub against plants due to curiosity or in an effort to leave their scent, not because they find it pleasing.

9. Are there any essential oils safe for cats?

Some essential oils such as rosemary, copaiba, helichrysum, oregano, frankincense, and cedarwood are considered less toxic to cats. Additionally, diluted chamomile, lavender, thyme, and valerian can also be tolerated in very limited amounts. However, it’s crucial to consult a holistic veterinarian for personalized recommendations before using any essential oils around your cat.

10. Can essential oils cause liver failure in cats?

Yes, essential oil toxicity can cause severe liver damage and potentially liver failure in cats due to their inability to properly metabolize the oils. This is why immediate veterinary intervention is important.

11. What happens if a cat licks lavender essential oil?

If a cat licks lavender essential oil, they will experience all of the above-mentioned symptoms of toxicity. Additionally, licking it may result in increased gastrointestinal distress such as drooling and vomiting.

12. Is lavender incense safe for cats?

No. Burning incense can cause respiratory issues and can pose a risk of burn injuries. Furthermore, the smoke itself can be an irritant, and the released fragrances from incense, even those derived from plants, can be toxic.

13. Do cats hate the smell of lavender oil?

While some cats may not mind the smell of the plant, the concentrated essential oil is usually too potent and can be overwhelming. This could be why many cats seem to dislike it. It should not be seen as a repellent, however, because some cats will still attempt to interact with it, which can then lead to serious illness.

14. What are some pet-safe alternatives for scenting my home?

Instead of using essential oils, consider using natural methods for scenting your home such as simmering spices, using fresh herbs, or regularly cleaning your home to eliminate unwanted odors. There are also many pet-safe sprays, and diffusers that utilize essential oil free formulas.

15. What should I do if I suspect my cat has essential oil poisoning?

If you suspect essential oil poisoning, seek veterinary care immediately. Do not induce vomiting without consulting your vet, as this can lead to further complications. Be sure to bring with you any products that you suspect your cat has come into contact with, as well as any information on the amount of exposure, and the time at which the exposure occurred. The veterinarian will need this information to best assess the situation and to decide upon the most appropriate treatment.