help with a enclosed grow room

i have searched the links and probaly missed this info.i need a tutorial on how to build a fully enclosed flowering room.by that i mean no oder escaping this has caused a problem in the past any and all help is appreciated.

carbon scrubber?

Panda film, a staple gun and several rolls of duct tape. Seal it up has good as you can. Don't skimp on you up exhaust fan and you will create a negative pressure in the room. Any spots that aren't sealed will be drawing air in so no smells go out. Don't forget the carbon filter and to design an intake that will maintain your negative pressure and you should be good. I just did the same thing and I've got no issues.

Definitely a good inline fan with carbon filter. I tend to exhaust out into my backyard under the porch so it's not too bad.