Is your real name "Thomas"?
If a piece of bread is consecrated by a Catholic Priest, thus becoming literally the body of Christ, will it ever subsequently suffer corruption (decay)? Of course it will.
You have a very poor understanding of the dogma you wish to subject to experiment. Do you think the Catholic Church believes that its adherents eventually become full of communion wafers and explode, or do we perhaps have some ideas about how they are broken down in the digetive process?
You do not understand the concept of transubstantiation. The accidents of the bread remain and appear as bread. It tastes like bread, it looks like bread, it get soggy in milk like bread. It even reacts to the elements like bread. Its substance is the Body and Blood of Christ.
Substance is not something that you can put to the test, or detect with science or senses.
SD
Actually, my middle name is Thomas. And I was brought up RC. Thankfully, I was given some of the "doubting" spirit- as Paul directed (search the scriptures, etc), and found that Catholic Dogmas are those of men. Your explanation of transubstantiation is convenient. So when Jesus said "This is my body" he was really meant "this is bread, but the substance of this bread is my body"? Unfortunately, the RCC has taken a beautiful metaphor ("I am the bread of life" - was his substance really bread?) and twisted it into a man-made dogma. Worse yet, the RCC proclaims an anathema (denies salvation)to anyone who claims otherwise!