Does your kitty have asthma or chronic upper respiratory infections? Coughing, wheezing, shortness of breath and lethargy are common symptoms of feline asthma. It is primarily caused by allergic bronchitis where the cat’s lungs become inflamed due to an inhaled allergen. Smoke, pollen, dust, scented candles, cleaning products, cat litter & perfumes can trigger an asthma attack. Ask Ariel's Olive Leaf Extract For Pets is a natural anti-viral supplement that is helpful for cats with asthma and upper respiratory infections. Olive Leaf is an ancient herbal remedy used since biblical times.