The federal government does not currently have any laws or guidelines in place that require gas stove emissions be vented outdoors ... you’d be cooking on coal or wood—not gas.

Freestanding gas stoves look just like wood stoves, but with the convenience ... Smaller flames are to be expected with ventless over vented gas stoves in order to keep the exhaust gases within ...

Natural-vent gas fireplaces, a.k.a. B-vent fireplaces ... choice for converting existing wood-burning fireplaces, and for ...