It has been doen, but it can be dangerous for the fact that it may put out way more CO2 than is necessary and become harmful to human occupunts of your home. If you do this, you would probably need a way to turn the venting outside for two or three reasons. 1. When lights are out you would need to have the CO2 stop comming in the grow room or it would be counter productive and two in the event it is to much you would need to be able to control it and still be able to get the Co2 from your dwelling.
Some honey for thought, hope it helps.
Adieu