Cleaning the pump/should i trash my supply?

New mom here to a 10 week old...Today I learned that when my husband cleans the pumping parts he uses the food scrub brush. I have 100+ oz stocked up for when I go back to work. I do not know which bags were collected after he cleaned the parts.

I have been googling information and learned some of my practices haven't been the safest either! 🤦 Like just sitting everything in the fridge in between pumps when I know I will be pumping again in 2 hours.

Do I need to trash all the milk I have stocked up? The internet has me freaking out! I go back to work in 2 weeks.