Even if natural gas is safe, it is important to understand the risk of house gas explosion. Utility companies offer their customers gas safety tips prior to a winter season every year. They ask the customers to call 911 or the utility's emergency line when the customers smell like a rotten egg or hear gas leaking sounds. However, elderly people or those who suffer from desensitization of the sense of smell or under bad physical conditions, they might have a diminished capability to detect a gas leak.
There is at least potential possibility to leak gas from a gas appliance if the gas appliance is not checked by a professional periodically. To protect your family and your properties, a reliable gas alarm will help to significantly reduce the risk of gas explosions, by providing an early warning and significantly reduces the utility companies' liability by helping to save lives and prevent property damage when the gas alarm is installed in every room in which there is a gas appliance.
[Peoples Gas] - https://www.peoples-gas.com/all-about-gas/safety/smell/
[National Grid] - https://www.nationalgridus.com/Upstate-NY-Home/Natural-Gas-Safety/