Yes... a TINY amount... or breathe on it... like pissing in the ocean warms it up... but it will also give it unwanted nighttime light.

I'm 99.4% certain that CO2 is not your limiting factor... add ventilation indoors, and outdoors, don't worry, because there is plenty of available CO2 in the atmosphere.
stinkyattic Reviewed by stinkyattic on . Candle Is it true that if you put a clandle by your plant it will feed it carbon dioxide? Rating: 5