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

When a Cat Becomes a Water Fountain – Why Cats Vomit After Drinking

Seeing a cat drink water and then promptly bring it back up can be confusing. Sometimes the explanation is fairly simple, particularly if...

Chatting About Sleeping Positions, Loafing & Cats in Tubes | Chatty Cattys, Episode 33

In this episode of Catster’s Chatty Cattys podcast, Dr. Karyn and Nicole dive deep into the fascinating world of feline sleep behaviors. From...

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...

More related

Going Back to the History Books: How Recent DNA Analysis is Rewriting Feline History

If there is one thing that scientific research has proven, it’s that we can never know anything for certain; just as we start...

How To Remove Cat Urine Smell From Your Whole House: 5 Vet-Verified Tips

For all the joy they bring into the home, one aspect of having a cat that most owners don’t often appreciate is the...

Why Do Cats Sleep So Much? 6 Vet-Approved Reasons

Chances are that while you’re reading this article, it’s probably quite likely that your cat(s) are sleeping: on your lap, in the sink,...

MRI For Cats: Our Vet Explains What Is It, Uses & Costs

Magnetic Resonance Imaging (MRI) is a form of advanced diagnostic imaging that generates clear 3-D pictures of the soft tissues in the body....

Keep reading

My Cat Ate a Dryer Sheet! Vet Reviewed Information & What to Do!

As cat parents, we all know that cats are curious, mischievous, and can get into any number of things they shouldn’t. That includes toxic chemicals, toxic plants, and even dryer sheets. Fabric softeners, both in liquid and dryer sheet form,...

My Cat Ate a Dryer Sheet

My Cat Is Aggressive Toward Guests: 5 Reasons Why and How to Stop It (Vet-Reviewed)

Cats are often reluctant to interact with visitors. Some hang back and monitor their environments until they become comfortable enough to join the activities. Others make themselves scarce and stay hidden until the coast is clear. Some cats also react...

Aggresive cat scratching a man

Can a Neutered Male Cat Still Get a Female Pregnant? Vet-Verified Facts

Neutering or spaying your cat is a crucial part of responsible pet ownership. It prevents accidental litters, some behavioral problems, and reproductive conditions and ensures you don’t contribute to overpopulation. However, a neutered male cat can still get a female...

tabby cats walking and twisting their tail to a heart shape

Why One Squinting Eye in Cats Is Never Worth Ignoring

A cat squinting both eyes is usually a sign of contentment. A cat squinting just one eye is a different story. That asymmetry matters more than most cat owners realise, and understanding what’s behind it can make a real difference...

cat with squinted eye

9 Best Tartar Control Products for Cats in 2026 – Reviews & Top Picks

Every cat owner knows that their feline companion can spend hours upon hours grooming themselves, but one area they can’t clean is their teeth. Dental hygiene is paramount to the health of your cat, and the smell of your cat’s...

tabby maine coon teeth brushing

How to Care for Hairless Cats: Vet-Approved Tips & Guide

Hairless cats are a real eye catcher for most people. Even people who aren’t too cat crazy might be mesmerized by the odd look and interesting breed characteristics. If you live in a home with an allergy sufferer, hairless cats...

hairless cat feline

Why Is My Cat Stalking Me? Vet-Approved Behavior Explanation

Cats stalk their prey, stalk their toys, and sometimes even stalk their food. However, what concerns many cat owners is when their cats decide to stalk them. You’re probably familiar with the behavior of a cat stalking and pouncing. They...

woman sitting beside her cat

10 Best Lickable Treats for Cats in 2026 – Reviews & Top Picks

Cats can be picky eaters, leaving you frustrated about spending money on cat food that goes uneaten. If you’re looking for ways to get your cat to eat, providing lickable treats is an excellent way to entice your cat. Most...

woman feeding her cat with a treat

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.