I keep fresh milk in the fridge for my toddler. My kids don't think twice about the milk containers in there. They prefer almond milk, but I know my husband has stolen some for his coffee before when he ran out of creamer.
I grew up with nursing mom's and it never seemed weird to me to have milk in the fridge. It wasn't until I was online, on mom forums that I learned how much people bottlefed and how weird people felt about nursing.
True story : my mom went on vacation to Hawaii with my dad when I was only a few months old. My aunt breastfed me while my mom was gone, because my cousin was 3 months older and she was nursing her, too.
I've also nursed 2 children who weren't mine, when baby sitting, with permission of their mothers.