1. Pet allergens can trigger allergic reactionsHair, dander, and proteins carried in saliva are major pet allergens. Pet hair is fine and can easily remain airborne in dry autumn and winter weather. Once inhaled, it may cause nasal discomfort, difficulty breathing, rhinitis, or asthma. Skin contact may also trigger allergic reactions, eczema, and other skin conditions.
2. Pets and their waste can produce odors
Pet waste, parasites, and germs on an animal can all contribute to odors. In an air-conditioned room during summer, odors cannot readily disperse from the enclosed space and may become more noticeable. Dust mites, bacteria, and other accumulated pollutants can further make the indoor air stale.