Family moved in, 4S getting worst

[Guest guest]

My aunt and two of my cousins moved in about a week ago. The youngest (11 yrs

old) has a mild case of Autism. He is unaware of the noises he makes. I get

waves of rage towards him to the point where I almost lose it. Afterwards I feel

so horrible. I try to ask him to be quiet but he just ignores me. My family does

not understand Misophonia so it's hard for them to help me. Do any of you have

methods of remaining calm? I tried listening to music, reminding myself he

doesn't know, leaving the room, and going to my room but for some reason the

anxiety keeps building with anger. I was able to control it a lot better before

they moved in but now it seems to be slipping. I'm afraid I'm going to end up

screaming at him or worst. Please help!