Low odor autoflowers and cash crop box

questions from a fellow grower:

Odor? I hear that Northern Lights autoflower does not give off heavy odor during flowering? Do you have any knowledge of low odor autoflowers? I see a cash crop 4.0 advertised on your site. Does this unit have a 3 ft capacity? Does it have any provision for venting odors? Trying to get the right setup originally Thanks for any help that you can provide.