SALT LAKE CITY — A bill that would limit the circumstances in which an animal shelter can use carbon monoxide gas to euthanize an animal passed the House without debate Wednesday.

After passing the House with a 61-8 vote, HB57 now goes to the Senate.

The bill, sponsored by Rep. Angela Romero, D-Salt Lake City, states that carbon monoxide gas could be used only when another method of euthanasia would cause unnecessary stress to the animal or endanger the person doing the procedure.

If carbon monoxide is used, shelters could place only one animal in a gas chamber compartment at a time. The bill would also require animal shelters to adopt a training program for those performing euthanasia procedures.

Over the past few years, there has been outrage at the malfunction of carbon monoxide gas chambers, with some calling for a complete abandon of carbon monoxide euthanasia at shelters.