Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Why Is My Cat Sneezing All of a Sudden? 6 Vet-Reviewed Reasons

Share

tabby cat sneezing

Has your beloved feline friend suddenly started sneezing as if there’s no tomorrow? Cats sneeze for various reasons. Your kitty could have gotten wind of something that is disrupting their delicate sense of smell, or they are allergic to something in their environment. Either way, intermittent sneezes are typically not a major cause for concern unless your pet also starts avoiding food, losing weight, or becoming lethargic.

While benign nasal polyps or a malignant tumor could be underlying causes of spontaneous sneezes, keep reading to discover six common reasons that your cat might be sneezing all of a sudden.

divider cat faces 2 oct 2024

The 6 Possible Reasons Your Cat Is Sneezing All of a Sudden

1. Upper Respiratory Viral Infections

Cat sneezes
Photo Credit: ZlataMarka, Shutterstock

Cats, just like people, can suffer from upper respiratory viral infections. Cats that have recently been adopted from shelters or have been hospitalized and exposed to other cats are particularly susceptible to these infections. The most common culprits include feline herpes virus and feline calicivirus, both of which cause kitties to get stuffy and sneeze.

As a general rule, there’s not much you can do to “cure” a feline upper respiratory viral infection. Your companion’s body will need to do the work; it’s no different from the misery that ensues when you catch a cold and have to deal with a clogged nose and scratchy throat until your body gets into gear and takes care of business. Vaccinating your pet is the best way to prevent respiratory illnesses from developing.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

Preventative wellness PGV mention keep cat healthy Preventative wellness PGV mention keep cat healthy mobile

2. Bacterial Infections

Bacteria can also cause sneezing, nasal discharge, and watery eyes associated with upper respiratory infections. In fact, it’s pretty common for upper respiratory infections to start as common viral issues and then progress into bacterial infections as your cat’s nasal and sinus passages become inflamed. Bacterial infections are often accompanied by fever and may require systemic antibiotics to resolve.

Bacterial dental infections are a common cause of sneezing in cats. Cats with serious dental issues often suffer inflammation that extends into the nasal and sinus cavities, causing sneezing and other signs that often resemble upper respiratory infections.


3. Allergies & Irritants

cat smelling a sunflower
Photo Credit: scarlett1991, Pixabay

Just like humans, cats often sneeze when exposed to substances that irritate delicate nasal and sinus membranes like smoke, perfume, and mold. But some kitties have specific allergies. Cats can be allergic to a particular food or pollen or even something in their cat litter.

Keep in mind, however, that cats are far less likely to sneeze in reaction to allergens than humans. Cats suffering from allergies will typically spend time scratching and licking as well. Kitties with food allergies are notorious for removing large swaths of fur from their abdominal area and back while attempting to relieve the pruritus (itchy feeling) associated with a food allergy.


4. Nasal & Sinus Issues

Your cat can suffer from rhinitis and sinusitis, which are conditions in which the lining of the nasal passages and sinuses end up irritated and inflamed. These often occur as a result of an upper respiratory infection. Common signs include difficulty breathing, snoring, and ocular discharge. Treatment is usually straightforward and often involves basic supportive care, such as nasal washes, antibiotics (or antifungals, depending on what is determined to be the cause), and occasionally, decongestants.


5. Chronic Upper Respiratory Infections

a ginger cat sneezes
Photo Credit: Ihtar, Pixabay

If your cat has repeated sinus infections or upper respiratory illnesses, they can have chronic upper respiratory issues. The signs are often the same as what you see with viral and bacterial infections like rhinitis and sinusitis. Most veterinarians consider a cat’s upper respiratory illness chronic when it lasts for a few months or regularly comes back after treatment. Advanced diagnostics may be needed to isolate the specific pathogen and determine if a longer course or change in antimicrobial is needed to combat the illness, should signs last more than a few weeks.

Cats infected with viruses, such as feline herpes virus, often have relapses, particularly when stressed, so it is best practice to keep them as calm and comfortable as possible at home.


6. Foreign Bodies

Because cats understand the world largely through their sense of smell, they can sometimes get objects stuck in their noses after taking a sniff of a novel plant, person, or object. Blades of grass and other plant matter are usually the biggest culprits. Kitties are generally able to get rid of things like the occasional grass clipping or bits of pollen naturally.

If your cat doesn’t seem to get any relief and the foreign object seems stuck, contact your veterinarian for help. Home remedies can often do more harm than good in these situations. Treatment often requires light sedation to permit the irrigation of your pet’s nasal passages or the removal of the offending object with forceps (possibly with the aid of rhinoscopy). Your veterinarian may prescribe antibiotics to prevent infection and medication to soothe your cat’s irritated nasal passages.

divider cat faces 2 oct 2024

Final Thoughts

Cats can sneeze for a variety of reasons, including allergies and infection. Either way, it’s good to know that cat sneezes aren’t usually a cause for concern as long as your cat’s nose isn’t producing thick yellow or bloody mucus. It’s best to contact your companion’s veterinarian if your cat’s condition doesn’t improve in 1–3 days or if you suspect that your four-footed friend has a foreign object stuck in their nose. Remember that early intervention of a suspected upper respiratory infection is often the best way to prevent it from becoming a larger problem down the road.

Related Reads: 


Featured Image Credit By: Jupiter_79, Pixabay

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

One in 100 Cats Gets Diabetes – Here’s How to Catch It Early

One in every 100 cats develops diabetes.1 That’s not a rare, unlucky condition reserved for cats with obvious health problems. It’s common enough...

Dramatic Rescue Turns Into Dramatic Reunion

What started as a routine call for the RSPCA became a heroic, five-hour rescue featuring one trapped and traumatized cat, an emotional family...

Ask Dr. Paola – Help! How Do I Know if it’s Ear Mites! (May 4, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Hope for the Tiniest Fighters: Baby Kitten Rescue | Heroes of the Pet World

In a world where the smallest and most vulnerable animals are often the easiest to overlook, Caroline and Baby Kitten Rescue’s work is...

More related

10 Cat Themed Purses That Lets The Cat Out Of The Bag

Are you crazy about cats? If so, there are tons of cat-themed purses you may want to try out. Surprisingly, cat-themed purses are...

10 Paw-some Fiction Books About Cats in 2026: Our Fave Novels Starring Felines

For cat lovers, finding a book that involves felines as the main character can be difficult—books that are worth your time reading, that...

Baytril (Enrofloxacin) for Cats: Our Vet Explains Uses, Doses, & Side Effects

“Baytril” is the brand name of one of Bayer’s veterinary use medications. The active ingredient of Baytril is enrofloxacin, an antibiotic that belongs...

Can Cats Have Down Syndrome? Vet-Reviewed Science & Info

There are many diseases and conditions that can affect both cats and people: Cancer, influenza, and even the plague have all been found...

Keep reading

Cat Chewing Her Fur Off? Vet-Reviewed Reasons & Solutions

A cat’s grooming is generally the least of any owner’s concerns until they take their daily habits too far. Overgrooming can have medical causes such as skin allergies, but it can also be caused by stress and anxiety. You can’t...

orange cat licking its paw

How to Use Cat Nail Clippers: 4 Vet-Approved Steps

Devoted cat parents go above and beyond to create comfortable environments for their felines and ensure their furry friends are always well-fed and well-maintained. Grooming is an essential part of every cat’s life, and cat nail care is one of...

Cat in a veterinary clinic hairdresser cutting nails

How to Get Your Kitten to Like Water: 4 Vet-Reviewed Methods

A popular complaint among pet cat owners is that their cats don’t appreciate baths and are not cooperative when it comes to being given baths. Though there are many possible reasons that a cat may have an aversion towards baths,...

british shorthair cat peeps from the bathtub

Why Does My Cat Sleep at My Feet? 6 Vet-Reviewed Reasons Behind This Behavior

Cats love to nap, with some spending more than 15 hours per day asleep. But cats can be pretty particular about where they snooze. Most have favorite places they return to over and over when it’s time to get some...

Bengal cat hugging their owners feet to sleep

Can Cats Sense the Death of Another Cat? Feline Truth Unveiled

Cats have many strange behaviors and are associated with many myths and legends. People often even attribute magical properties to them. However, one power that might have some truth is that cats can sense the death of another cat. Keep...

Cats Cudduling in a couch

How to Keep Your Indoor Cat Happy: 12 Vet-Reviewed Tips

If you want your cat to live as long as healthfully as possible, keep them inside. Indoor cats not only tend live longer than their outdoor counterparts, but they’re exposed to fewer illnesses, infections, and injuries. They will inevitably require...

woman-playing-with-her-cat

How Long Can You Leave a Kitten Home Alone? Vet Approved Tips

Cats are known for their independence and can stay at home alone for a few hours as long as they have food and water. If you have just brought home a kitten, you may wonder if they will be okay...

a woman holding a ragdoll kitten in her arms

Cat Drinking a Lot of Water & Meowing? Vet-Approved Advice & When To Worry

If your cat is making more noise than usual and constantly visiting the water bowl, it might be a sign that something is wrong. They could be experiencing a wide array of health concerns, or it could be something completely...

cat drinking water from fountain

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.