Is a carbon air scrubber good enough for 4 plants?

150 CFM 80 CTC, is this good enough for 4 plants? Also, can I just hang this thing without a vent....it'll just suck air through and out.

So it sucks the odor and shoots it out ordorless...this works just like that right? and my strain is NL x Big Bud, that should cover most of the smell ya?

Thank you very much, appreciated to the fullest, please respond (first timer)

That should be fine for any odor you have. The real test will be when you finish, and harvest and hang the plants. That's when you'll really have some odor. But it's a good odor!