So I have this carpet thing too.
Dont think my reaction to it is/was exactly like yours, much less intense.
It just causes me to switch off emotionally, in which case therapy while triggered like that would have zero impact on me.
I'm lucky in that the carpet in my instance was this ridiculous 70's style purple psychedelic pattern, swirls of various shades, and I've never had to encounter it physically again.
I just used to see it in my mind before id disassociate during sex before id fixed those issues.
I hadn't 'seen' it in a long time, and then in March this year one morning I arrived at work and the new campaign logo was presented to us.
I was totally floored when I realised id be staring at my old trigger for 16 long weeks, every day at work.
Right when I was heading back into some of my worst anxiety states and had just begun seeking help to work on my issues again as well.
So I decided to take it as fate.
And a challenge.
Now 7 weeks in, I've delved back into those old emotions with that ugly letter head.
Voiced all the emotions that caused the detachment.
Trying not to go into detail, but I basically used that carpet to stop myself enjoying my abuse, at that time I was bang in the middle of puberty and my abuser was trying to make me an equal party in his sick fantasy by showing me 'pleasure'.
I would stare at the ugly swirls to distract myself so beginning my love affair with disassociating during pleasure of all kinds.
To begin with I was terrified it would bring all my sexual disfunctions back to the surface, and it almost did.
But I pushed through and instead its showed me some other things id long buried, helped me face them, and also made me recognise that sexual pleasure isn't the only thing I 'switch off' from.
Might not be helpful for you honey, I feel like its a very 'walking on thin ice' kinda game to play and could very easily go the other way.
Only you can know if you are ready to face those emotions yet.