~lol~ ONA gel works until you grow a really stinky strain. I used to use it too, until I grew a strain called El Peru. I came home one day and could smell the plants all the way to the curb as I walked up the driveway. There's no mistaking that skunky smell. Yikes!
There are a few ghetto odor removers that could be used with Odor Neutralizing Agent, like odor absorbing kitty litter crystals, baking soda. You can use these by some ghetto means like hanging it in stockings and/or a box with a fan rigged into it, or build something like this:
Keep an automatic deodorizer that you plug into the wall running and and an aerosol of some potent synthetic stench handy in case you need a quick cover-up.