Answer:
The warmer I am the fresher I am.
I am black when you buy me red when you use me when I turn white you know it’s time to throw me away.
My second is performed by my first. A thief by the marks of my whole might be caught. What am I?
What can fill a room but takes up no space?
I am very afraid of doing scary activities.
I tell people to be careful when handling boxes.