Releasing gas from the bottom of the pond. Is it beneficial?

[Dmitry]

I have 100 by 40 pond and it's been about 5 years since it was completely cleaned.
Now I have some muck on a bottom. I noted there is a lot of gas releasing when I poked the bottom with a stick. Is it beneficial to go around and poke the bottom with a long stick?
The bluegill and bass doing well so far.
I aerate a couple of hours a day now.

 

[GBBUDD]

its a sign of a healthy pond

 

[Dmitry]

its a sign of a healthy pond

Should I try to poke it around and release the gas or keep it is. Does not want to hurt fish.