can filter vs ozone jr

My space is 3w x 2d x 6h. 4plants growing well but starting to stink@4weeks. Due to no more room in the box I wanted to push exhaust through carbon filter which would be outside of grow box. Hydro store said it wouldn`t work out and suggested ozone jr. After looking into ozone it sounds convenient ie no ducting,but I don`t think it`s the healthiest option. I read here that O3 will lessen the potency of the plants.
Currently using 300cfm fan with 400W cool tube getting lots of air exchange and good temps now.
Any suggestions?

ozone generators work well until its time to harvest
at which time ive found they just cant keep up.
i use a carbon filter and i can see the hydro stores reasoning. if you push the air and the filter is on the outside any leaks at all will push the skunk smell all over the place
if you can get it set up with zero leaks tho it should work for you

Thanks, Maybe I should use both methods.