No. An EFV is designed to significantly reduce the flow of gas if the service line outside of the structure becomes damaged, lessening the possibility of a natural gas fire, explosion, personal injury and/or property damage. Small leaks which can also be dangerous over time may not be detected by the valve. Any time you smell natural gas, leave immediately and call M.U.D. at 402.554.7777 or 9-1-1 from a safe location.