Just dog and cat number restrictions here. My ex-stepdad is a no pets person who always claims it smells like dog, no matter what. We had a problem with the septic system and it smelled like sewer one day, he walks in and says "it smells like dog". I was cutting an onion yesterday and he walked in and said it smelled like dog. We just ignore his whining because apparently he doesn't know what dog smells like to begin with. I'm sure you keep your cages clean enough where the only animal smell is clean animal smell.