How do you pronounce cat fart in french?

It's not polite to talk about cat farts in any language, but if you must, here's how you'd say it in French:

"Pet" is the French word for "fart."

"Chat" is the French word for "cat."

Therefore, a cat fart would be: "Un pet de chat"

The pronunciation is roughly: "uhhn peh duh sha"

Remember, saying this out loud may be considered rude, so use it with caution!