The most annoying sound.. Short answers please!

I forgot to add: when a siren goes passed (emergency services) it's so I'm sanely loud. I often think that NT people have no idea the pain they cause noise sensitive people!! It genuinely hurts my ears everytime

I forgot to add: when a siren goes passed (emergency services) it's so I'm sanely loud. I often think that NT people have no idea the pain they cause noise sensitive people!! It genuinely hurts my ears everytime

red/blue interchanging lights hurts my eyes, and if I'm closer than 5m  they cause dizziness, to the point of losing balance

blinking red alone is even worse