what is the one sound that irritates you the most?

Classical/opera music.

A cat meowing loudly (especially at night).

SpongeBob's laugh. 

canadausa music for sur3

Babies crying when ever I go anyway someone's baby is crying

You're asking a misophonic this...

Eating sounds, I suppose.

I can't chose just one. I am really noise sensitive and am easily irritated by almost all loud and/or repetitive noises. Dogs barking. Little children's high-pitched squealing. Loud vehicles, especially motorcycles. Building sites. Leaf blowers and lawn mowers. Bad music played too loudly with too much bass. Crowded places where everyone is talking at once. I could go on and on. I didn't used to be this way. 

Snoring. It is the most irritating sound while trying to sleep.

a baby hollering

The sound of a dog continuously barking at something trivial.