well i didnt think they really did, the way you were saying it, you were saying it was such a high amount of CO2 that it could make you sick, thats why your mom said she didnt think you should have your plants in your room because they release gasses at night...i was like, wtf untrue, now, i dont doubt they release a small amount of CO2, but not large enough to make you sick. and future references, keep my name out of the topic please?