Will 2 plants smell enuf to...

I was just wondering if 2 plants were gonna be enuf to raise any significant amount of smell to have to put on a carbon filter.

or can you even tell if there gonna smell becuase different strains have diff potency?? just something i was wondering becuase if i dint have to i really dont want to make oone.. but i will if i need to .

All weed stinks when flowering...esp towards the end. HArVEST time!!! Carbon should do the trick.