Second filter for second area? Doesn't have to be an grow-tent.. .could just have a nice little mesh drying rack... or if yo like to hang them, hang them etc... You don't want it drying with growing plants anyway, that'll raise humidity to dangerous levels, plus the light comes on 12 hours aday an that's not optimal for drying/curing either.
Maybe a closet with a carbon filter running will be enough to reduce the smell and contain it enough not to leak? it likely doesn't have to be perfectly sealed, but just enough for the filter/fan to keep up with the stink and cause negative pressure in that area -- smell won't escape, if so.
