yes definately the animals. we know because we did an experimant and took everypet and all the rescues OUT of the home for the weekend and he was able to BREATH again without all the trouble. I also feel REALLY bad because for YEARS since he was a baby he always talked with this nasal voice... we just thought it was his voice.... when we got him away from the animals and scrubbed everything...HE HAD A DIFFERENT VOICE
...as soon as they came back.... within a few days he had the nasal voice again....I FEEL SO GUILTY