Occasional sneezing in cats is often harmless and may follow dust, litter dust, strong scents, or a brief upper respiratory irritation. Repeated sneezing, nasal discharge (especially yellow or green), lethargy, reduced appetite, or eye discharge suggests infection, allergy, or another problem that deserves veterinary attention.

Common causes include viral upper respiratory infections (very common in crowded or stressful environments), bacterial complications, fungal disease in some regions, foreign material in the nose, dental disease affecting nearby structures, and environmental allergies. Irritants such as smoke, perfumes, cleaning sprays, and dusty bedding can trigger sneezing without infection.

Brachycephalic and long-haired breeds with heavy facial structure or dense coat around the face may seem more sensitive to dust and may need extra attention to litter choice and air quality, though any cat can be affected.

At home, reduce airborne irritants: use low-dust litter, ventilate when cleaning, avoid aerosols near the cat, and wash bedding regularly. Do not give human cold medicines; many are toxic to cats. If sneezing is frequent, worsening, or paired with breathing difficulty, open-mouth breathing, or fever, treat it as urgent and contact your veterinarian. Chronic sneezing may need imaging or culture to find the underlying cause.