Generally, loud noises. But I blare music in my car which I'm pretty sure is resulting in deafness. Lol for example, I love how fireworks look, but because they're so noisy, they irk me a bit. I still go out and enjoy them. But that comes with some personal sacrifice.
Also, spitting. It really freaks me out when pepole spit near me. I use to have a phobia of saliva when I was in my late teens. My family would give me wet willies, lick my face to tease me lol. I've grown out of the phobia, but it still peeves me a bit when people spit near me.