Figure out a way to get it to the roof, even if you have to build an exterior enclosure for it. DO NOT vent it into any indoor space, or outside where it's near any area that you don't want to smell of sewer gas. Get some professional design help for this and/or read up on proper venting - this is an important subject and a small investment now can save you a lot of rework later.
: I am installing a toilet in my ground level basement.
: We have sewers. I cannot run the vent up to the roof.
: Will it still be effective if I run it outside or into the ceiling.