Try this instead... 3/4" thick x 4' x 8' foam insulation board with a reflective mylar "hammered" finish. Polyshield is the brand name at the big orange store. Use flex-fix brand flexible (also reflective) duct tape to seal the joints. This tape is the exact same material as the reflective mylar coating on the foam board. Use some 2" x 4" 's to frame it and double up on the foam board for a door and hinge that foam door with the flex-fix tape right down the length of the left or right side of the door. The foam door should squeeze into a slightly smaller opening to maintain the airtight seal. The reason why I tell you to do this is because panda film is vastly inferior to 3/4" thick polyshield foam board. Matter of fact, polyshield foam board is used for cloning, reflective flooring and scrambling the infrared frequency of a heat gun or thermal imaging device. It is in fact the most indispensable material ranking second only to water.
To control odors to the tune of 100% elimination you must not maintain a 100% airtight seal of this room. You will need to keep an exhaust fan on at all times ( with properly rated carbon filter, make sure your fan can handle the static pressure load of the filter and still be effective at removing heat). To remove odors at all times, you need to maintain a negatively pressurized room. Simply create an airtight room, and then poke a small hole or two ( size of a penny is more than enough) on all four walls and the ceiling. Keep some kind of fan/filter combo going at all times and you will always remove odors as long as your carbon is not exhausted (my carbon filters are going strong for about three years now). You run the risk of releasing odors during CO2 injection if you shut off your fans.
With the money some people spend on CO2 injection rigs you could instead buy 100 beans, run a progeny test with them, find the super yielder/excellent quality elusive pheno and get way more yield in the future with a negative pressure room as opposed to a 100% sealed room. Hope this helps and best of luck.