I hate what my phobia does to my brain and body

Having a sickness phobia is a horrible way to endure life. Its constant worry about “what if i ate this and it was undercooked” or “i forgot to wash my hands and i bit my nail”. How do you guys deal with sickness in your life? It seems like torture that takes actual days to go away. Pain and suffering that can change your brain chemistry and how you look at life. Its so bad that whenever i have a panic attack, i compare it to how i would react if i died (im not s\*icidal btw) and it seems like death would be less of a problem than sickness. What do i do about this? Ive already gone to therapy multiple different times with tons of different therapists but the phobia wont go away. I think having someone who isn’t fearful of sickness, specifically stomach sickness shed light on how they see and deal with it would be helpful.