not sure if its possible but great idea if it works.
I deffinatly think its possible, Oyster mushrooms can produce enough co2 to cause harm to humans if left unproperly vented. And in some of my rooms that I had sealed during colonization actually affected my breathing capabilities in the room, so I think it would be more than possible, I plan on doing 20x10 foot no till beds with very cage running in an oval, in the middle of the bed with a scrog net placed around the cage to train outer branches that are to much of a hassle for the inside of the cage with verts I the middle, a rail on both sides of the outer edges, and supplemental cobs placed inside the walls for lower branch lighting etc if I find I'm not getting the proper amount of light needed. My theory with the mushrooms are I could build out my wall with 2x4s then place large clear plastic between studs, fill with straw and innoculant then cover with black rubber while colonization remove rubber cover to give light to clear bags (I say clear they would need to be more of a whitish color so that the high intensity of grow lights didn't affect them oysters use light during pinning and fruiting to regulate there direction and growth but only in moderation, and then cut holes where I plan on having the fruits pop out regulate co2 with air filtration and harvesting the needed mushrooms, now if I could get it tuned in enough to have the opening and pinning of the mushroom fruits with the desired flowering times, that will be the difficult part, but probably the most fun. But that's what i plan to have up and running by July.and actually after saying that I probably wouldn't cover with rubber I'd use a mylar cover to reflect light and block from spawn, rubber would just waste my electricity.