I react like this to some things, though I think it's part of my Asperger's.
DH eating mushy foods. Yes, he keeps his mouth shut, and eats politely, but even so the sloshy noises give me the rage. I have to eat at the same time, my own eating noises in my head are the only thing I've found to satisfactorily drown it out.
My dad drinking tea in bed on holiday. Thankfully this didn't happen too often (I am fine with him drinking tea at other times, it's specifically bed tea that is the problem), else I really think I would have made him wear his tea at some point. He would do a big blow, so that you could hear the waves of tea lapping at the opposite side of the cup, then a slurpy little sip, then smack his lips 3 times before repeating.
Certain whingy noises that DD (age 2) makes. I've been explaining to her that noise makes mummy's head hurt, so can she use her big girl voice. Sometimes it works, sometimes it doesn't, depends what mood she's in. If she carries on whining I have to totally (mentally) block her out- this only works for a certain time, then if she hasn't stopped I need to get away before I explode.