Additional Carbon Filter

Howdy Folks,

I'll be purchasing my first grow tent in the fall and hope to do all I can to keep the smell down. I'll have a carbon filter and duct fan inside the tent and I'm curious if it would be advantageous to have an additional carbon filter & fan outside the tent. I'm not talking about hooking it into the tent exhaust but rather just scrubbing the room air by itself. I expect the tents fan & filter will cut down on smells coming out the exhaust port, I'm more worried about the room smell when I open the tent to tend to my crop.

Buy one or two of those automatic air freshener sprayers.
Get the adjustable ones that spray every 15-20 mins or so.
The ones hanging in the corners of public bathrooms work great and u can buy refill cans from the hydro stores usually too.
Either or would work