thanks for the reply, regarding the carbon filter, just wow, that is an awesome idea if it works i imagine there would be no odour risk whatsoever.. Will i need more than one to be on the safe side though or should it be alright on its own? Wheres the most effective place to use it, some places say intake, some exhaust and even that you should hang it up... If you used one would you be able to tell there were plants in the room?