flee, flea

Flee or flee means to run away, as in escaping from someone or something--
He thought about trying to flee when the police came to arrest him.
The highway was jammed with people trying to flee the storm.

Flea or flea ( rhymes with flee ) means the small insect that bites cats, dogs, other animals, and sometimes people--
The dog is scratching. I hope he doesn't have a flea.
We put a flea collar on the cat to keep it free of  the pests.

Now that you know that, you can say--
"The cat ran around in circles in an attempt to flee a flea that was biting it."

Note--"fleas" ( rhymes with please ) is the plural ( more than one) of "flea"--
My dog has fleas.
Not to be confused with "flees" ( rhymes with please ), the third person singular ( he, she, it ) form of "flee"--
Every time he gets out on bail, he flees law enforcement authorities.
Note # 2--"fleece" ( rhymes with Greece ),  means the pelt of a sheep or a similar animal--
Theses boots are lined with fleece. They are very warm.
Note # 3--the past tense ( yesterday, or some time ago ) form of "flee" is "fled" ( rhymes with red )--
They tried to catch him, but he fled.