Influence of CO2 on decompression?

Hello,

Does anyone here know, if high levels of CO2 influences decompression. For instance when surfacing post siphon in a high CO2 environment. Then exiting after a surface interval in the high CO2 environment. Might this influence deco on the second dive?

I do NOT know, but would assume that once one began Deco, your CO2 level would drop drastically. I'm assuming of course that most of us do Deco essentially with almost no exertion during Deco. IF I'm correct then there should be little effect of a high beginning CO2 blood level, again I'm assuming the once exertion stops CO2 level in your blood drop quickly.
If nothing else maybe this post will start some discussion?