I had this thought a lot a year or two back and it came back today when I by accident touched a banana skin in a rubbish bag (was emptying a bin)

The thought is that the banana skin's radioactiveness makes me dangerous to be around for pets and people.

I can't shake this thought, it just won't go, even despite me using the tools the therapist I had last time taught me.

I washed my hands several times to try and get rid of the radioactiveness, idk if that worked to make the radioactiveness go away or if it made it worse and I spread it to my other hand

Is this thought right or is it a nonsense thought like the therapist told me last time it was?

Please make it go away, someone ....................

I hate obsessing like this