unwashed dishes

Washing dishes with impurity on one's hand

Q: I had an impurity on my hand and it dried. I meant to wash it but I forgot and then I washed a pot (with my hand), heated up something in it and drank it. Is this pot (and what I drank) pure? I washed it under running water. Do I have to worry about the other dishes in the sink being impure since I washed the pot over these dishes (the water I was washing with ran all over them), or can I just assume they are pure?

Covering food items and dishes at night

Q:

1. What is the correct Islamic ruling regarding washing and covering of dishes at night?

2. Should all the dishes be essentially washed before sleeping? Or Is it sufficient to cover the unwashed dishes? Or can they be left uncovered?

3. Should the washed dishes be covered too?

4. Should the fruits/vegetables be covered?

5. Do the food items like boiled milk inside shelves having net door need to covered?