That would have annoyed me too! I have a pregnant mom with a child in my care right now and she told both my husband and me that our garage smelled really bad the other day (my dcp's enter through my garage)...she was right...it was the day before garbage day and I have 4 kids in diapers here every day! My husband said I should have told her it's because of her kid's dirty diapers Other than that, I've never had anyone comment and I know it does sometimes smell if I have just changed someone...this is a daycare after all!