Why Does My Cat Sneeze? Common Causes and When to Call the Vet

By CozeCats · Last updated: November 9, 2026

Your cat lets out a tiny “achoo,” shakes her head and carries on as if nothing happened. One sneeze is rarely a concern. But when sneezing comes in bouts, repeats day after day or arrives with watery eyes and a runny nose, it is your cat’s way of telling you something is irritating her airway. This guide explains the most common causes, what you can safely do at home and the signs that mean it is time to call your veterinarian.

Is it normal for a cat to sneeze?

Yes, in moderation. Sneezing is a reflex that clears the nose of dust, fragments and other irritants, and VCA Animal Hospitals notes that an occasional sneeze is perfectly normal. What is not normal is repeated, vigorous sneezing, which VCA says suggests irritation of the nasal cavity. A single sneeze after a dusty corner or a sniff of something strong is nothing to worry about. A cat who sneezes many times a day, for several days, deserves a closer look.

Common causes of sneezing in cats

1. Upper respiratory infections (the “cat cold”)

This is the most common cause. According to VCA Animal Hospitals, feline herpesvirus type 1 and feline calicivirus are the two most common viruses behind upper respiratory infections in cats, while Bordetella bronchiseptica and Chlamydophila felis are the most common bacterial causes. Typical signs are sneezing, nasal congestion, conjunctivitis and discharge from the nose or eyes. The Cornell Feline Health Center adds coughing, mouth ulcers, lethargy and loss of appetite to the list. These infections are contagious between cats, so a newly adopted cat or a cat recently boarded is a common suspect. Our guide to whether cats can get colds covers home care in more detail.

2. Irritants and allergens

VCA lists airborne irritants such as powder, dust, fumes, smoke and aerosol sprays among the causes of repeated sneezing. Scented candles, cleaning sprays, dusty litter and cigarette smoke are everyday culprits. If your cat sneezes mainly after you clean, light a candle or change litter, try removing that one trigger for a week and see what happens.

3. Foreign material in the nose

A blade of grass or a bit of plant material can lodge in the nasal passage. This usually causes sudden, violent sneezing, often with pawing at the face. Do not try to dig it out yourself. A vet may need to sedate your cat to remove it safely.

4. Dental disease

It surprises many owners, but the roots of the upper teeth sit close to the nasal passages. VCA notes that conditions extending from the mouth, such as abscessed tooth roots, can cause sneezing and nasal discharge. Bad breath, drooling or chewing on one side alongside sneezing is a reason to ask your vet to check the mouth. We explain related signs in why cats get bad breath.

5. Chronic or less common causes

Sneezing that lasts weeks or keeps coming back is called chronic upper respiratory disease by VCA, and it is relatively common in unvaccinated cats. Nasal polyps, fungal infections and, rarely, tumors can also be involved, which is why persistent sneezing should never be written off as “just a cold.”

When should I take my sneezing cat to the vet?

Call your veterinarian promptly if sneezing is accompanied by any of the following, all of which appear in the Cornell and VCA descriptions of respiratory disease:

• Thick, colored or bloody discharge from the nose or eyes
• Squinting or swollen, red eyes
• Not eating or drinking, or marked lethargy
• Ulcers or sores in the mouth, or drooling
• Fever, enlarged lymph nodes or hiding more than usual
• Any difficulty breathing, open-mouth breathing or wheezing (treat this as an emergency)

Kittens, senior cats and cats with other health problems can go downhill quickly, so do not wait and see with them. Even a healthy adult should be checked if sneezing continues for more than a couple of days.

What you can do at home while you wait

Home care supports your vet’s plan; it does not replace it. These steps are generally safe and comfortable:

• Keep the air clean. Avoid smoke, aerosol sprays, scented candles and heavily perfumed cleaners. Consider a low-dust litter.
• Wipe gently. Use a warm, damp cloth to clean away eye and nose discharge, using a fresh corner for each eye.
• Encourage eating and drinking. Cats that cannot smell their food often eat less. Warming wet food slightly can make it more appealing, and our tips on getting your cat to drink more water can help with hydration.
• Offer a quiet, warm resting spot. A soft, enclosed bed such as the Cozy Enclosed Cat Bed gives a sick cat a calm place to recover away from household bustle.
• Separate cats if you can. Because the viruses and bacteria spread through saliva and nasal or eye secretions and shared bowls, litter boxes, toys and bedding, VCA advises caution around other cats. Wash shared items with hot, soapy water.
• Do not give human medicines. Many over-the-counter cold remedies are dangerous for cats. Always ask your vet first.

Sneezing patterns and what they may suggest

How to reduce the risk of respiratory infections

Vaccination is the first line of defense. The core feline vaccine includes protection against feline herpesvirus and calicivirus, and VCA notes that cats missing appropriate boosters can still become infected. Our explainer on whether indoor cats need vaccines walks through the schedule. Beyond that, keep stress low, wash hands after handling an unfamiliar cat and quarantine new arrivals as described in our new cat first-week guide. If your cat shows other signs of tension, such as hiding or overgrooming, read about the signs of stress in cats.

Long-term sneezers: living with a chronic cat

Some cats, particularly those who have had a significant viral infection, become carriers who sneeze now and then for life. According to VCA, upper respiratory viruses can persist in carrier cats for weeks, months or even years. Flare-ups are often linked to stress, a change in routine or another illness. If your vet has diagnosed a chronic problem, a calm, predictable home, a clean environment and regular check-ups make flare-ups easier to manage. Keep a short log of when your cat sneezes, what changed that day and what the discharge looks like. Photos or short videos of an episode are very helpful for your vet.

Frequently asked questions

Why does my cat sneeze so much?

Repeated sneezing most often points to an upper respiratory infection, but airborne irritants, allergens, a foreign object in the nose and dental disease can also be behind it. If it continues for more than a day or two, have your vet take a look.

Is a sneezing cat contagious to other cats?

It can be. The viruses and bacteria behind most cat colds spread through saliva and nasal or eye secretions, and through shared bowls, litter boxes, toys and bedding. Keep a sneezing cat separate if possible and disinfect shared items.

Can I give my cat human cold medicine?

No. Many human cold and allergy medicines are toxic to cats. Only give medication your veterinarian has prescribed or approved.

How long does a cat cold last?

It varies. Mild infections often improve within a couple of weeks, but cats that are very young, old or have other conditions can take longer or need treatment. Your vet can tell you what to expect for your cat.

Can dust or litter make my cat sneeze?

Yes. VCA lists dust, powders, fumes and aerosol sprays among the irritants that can cause repeated sneezing. If you notice a pattern after changing litter, try a lower-dust option and see whether sneezing eases.

When is sneezing an emergency?

Open-mouth breathing, wheezing, labored breathing, blue or pale gums, or a cat that stops eating and becomes very lethargic all need immediate veterinary care.

Keep reading

• Can cats get colds? Signs, home care and when to see a vet
• Do indoor cats need vaccines?
• How to get your cat to drink more water
• Signs of stress in cats

Sources

• VCA Animal Hospitals: Feline Upper Respiratory Infection
• VCA Animal Hospitals: Testing for Sneezing and Nasal Discharge
• VCA Animal Hospitals: Chronic Upper Respiratory Tract Disease
• Cornell Feline Health Center: Respiratory Infections

This article is general information, not veterinary advice. If you are worried about your cat’s health, contact your veterinarian.