Inn to wear dirty shirts when anxious?

It's either my PTSD or just my anxiety and panic disorder, but I always sleep in the same shirts every night without washing them- at the same time. Layers of them, especially in the summer, because I don't ever feel safe when I sleep/when the sun's up in general (yes, I sleep in the morning) so that when I want other people in my house to avoid me, they'll be stinky enough for them to evacuate a room spongebob episode style.

I used to do this all the time so I could escape getting dragged around, hit and a little less often yelled at as a kid, since they didn't want me out then. So I don't know if it's purely an anxiety tic that's normal, or something odd and only thanks to my PTSD.

Hearing shit about this'll really help calm my nerves a little on the situation, since I'm extremely embarrassed about it being so out there.

ps, I take care of my hygiene and wash my clothes regularly outside of this.