You'll want to never test grilling in any enclosed area, especially indoors, since it is too risky and never definitely worth the threat. Having said that, it is feasible to implement a gas grill on the deck or grass when build correctly. See this text for more tips on securely https://outdoorgrillinstallationn57777.wikibestproducts.com/1062279/detailed_notes_on_outdoor_grill_set_up