Originally Posted by Bwana
It could be a lot of things. There may be a leak in one of the connecting unions in your gas process line, an exhaust vent issue, or something else.
If you have ANY doubt, call the gas company and tell them you smell gas. They will be out quickly at no charge with a sniffer. I own one that I use for various gas applications at refineries, but that's not going to do you any good being hundreds of miles away. Like I said if you have even the slightest thought there may be a leak, call the gas company.
if there were a gas line leak, the fumes would be omnipresent 24/7.