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.


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.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

The Bite Stuff: The Truth Behind a Cat’s Sudden Nip

A cat bite that seems to come out of nowhere is one of the more confusing things a cat owner deals with. Everything...

Your Cat’s Purr Proves They’re One of a Kind

There are few sounds more comforting to a cat parent than the familiar rumble of a purring cat. You probably know your own...

“Pspsps!” Why Cats Find This Sound Irresistible

There are a few things that will capture the undivided attention of virtually any nearby feline: the sound of a can of tuna...

“Trophy Pets”: Two Rescued Lions Finally Find Freedom

Ori began life in a basement. BenTzur was found tied to a tree on a short rope. Both were rescued as lion cubs...

More related

Russian Blue Cat Breed: Info, Pictures, Temperament & More

The Russian Blue cat is a striking feline with pale blue fur and distinctive emerald-colored eyes. They are known for their affectionate personality...

Good News for Big Cats: Snow Leopards Get a New Home

Few years ago snow leopards in Mongolia received a “land grant” that was supposed to help the rare big cats thrive. Back in...

9 Best Calming Collars for Cats in 2026 – Reviews & Top Picks

Cats suffering from anxiety and stress can misbehave, act aggressively, and even develop health problems that can include diarrhea. It’s not always easy...

How to Determine a Kitten’s Age: Vet Approved Life Stages & Development Characteristics

If you’ve helped rescue a few kittens or found a stray litter that you want to support, it’s a good idea to find...

Keep reading

8 Best Kitten Foods for Sensitive Stomachs in 2026 – Reviews & Top Picks

Some cats have sensitive stomachs. Whether due to genetics or their gut microbiome, some kittens can’t handle the same foods that other cats can. The stomach upset that follows can be frustrating for you, but it can be quite painful...

American cat kittens eating

Is My Cat Deaf? 6 Vet Approved Ways to Tell

If you’ve been asking yourself, “Is my cat deaf or ignoring me?”, you’ve probably noticed changes in your cat’s behavior. Maybe they are not responding to your voice like they used to, or perhaps they seem oblivious to the vacuum...

cat ear close up

9 Best Litter Boxes for Kittens in 2026 – Reviews & Top Picks

Cats can be particular and fussy, whether it be with food, toys, or grooming. And their bathroom habits are no different. Even the slightest change in the texture or color can quickly put them off, so finding a litter box...

gray kitten sitting in litter box

Is Tea Tree Oil Poisonous to Cats? Vet Reviewed Risks & FAQ

Tea tree oil is often used for its antibacterial and antimicrobial properties but it should never be used on cats. Holistic health practitioners often use a blend of traditional medical therapies as well as food, essential oils, teas, and aromatherapy...

tea tree essential oil

Is Ivy Toxic to Cats? Vet-Reviewed Houseplants Examined

Plants can make for a wonderful addition to any home or yard. Not only do they add to the aesthetic, but they also come with other benefits, such as increasing oxygen and humidity and even cleansing the air around us....

Catster_Is Ivy Toxic to Cats

Do Cats Have a Belly Button? Vet-Reviewed Anatomy Facts & FAQ

When you’re petting your cat, and it rolls over so you can rub its stomach, you might find yourself wondering, do cats have a belly button? The answer to that question is yes; cats do have belly buttons. Like us,...

cat owner rubbing her pet cat's belly outside

BFF (Best Feline Friend) Cat Food Review in 2026: Recalls, Pros & Cons

Review Summary The BFF (Best Feline Friend) cat food line is an affordable, healthy, and tasty cat food for your best feline friend. Produced by Massachusetts-based Weruva, the BFF line contains ingredients from around the world and is manufactured in...

Best Feline Friend Cat Food Review

How to Tell if My Cat Needs Their Glands Expressed? 6 Vet-Verified Signs

As a cat owner, you need to make sure your beloved friend is healthy, and sometimes that means dealing with bodily functions that aren’t so pleasant. Cats have two anal sacs that help them mark their territory. The sacs are...

Cat sitting on a vet metal table

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.