Answer:
I'm blue, but when you see me I'm red. You don't see me too often. I'm there for you if you're hurt, but I'm good for you. What am I?
If you lose me you may cause people around you to lose me too.
If I drink, I die. If I eat, I am fine. What am I?
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down, but should not be forgotten. What am I?
I have wheels and flies yet I am not an aircraft.
A little house full of meat, no door to go in and eat.