hair's breadth - So close it's like your nose was almost touched by a hair. W

So close it's like your nose was almost touched by a hair. Which is the worst thing that can happen to you.

He almost got hit by a bus by a hair's breadth. His nose was almost touched by a hair.

She barely passed the test by a hair's breadth. Her nose was almost touched by a hair.

He almost got kicked out of the house by a hair's breadth. His nose was almost touched by a hair.