My condo has its own ground level entrance to indoor stairs leading to the 2nd floor unit. When I go away for a week the entry smells and I've come to think it's mercaptin but not strong enough to make me think gas leak.

I occasionally smell a small amount of gas in the 2nd level furnace/hot water heater/laundry room. It doesn't seem related to the furnace running or hot water heater. I'm wondering if it is coming from time to time from the indoor regulator on the gas line. I know you can sometimes smell gas near outdoor meters and am wondering if the regulator does a similar thing indoors.

If I get it checked out is it a plumber or HVAC or ? It's very faint and sporadic but it does seem to accumulate near the ground level front door when the place is closed up. Thanks for any advice.

One should NEVER EVER NEVER EVER smell gas indoors.

PERIOD END OF CASE

Let the local Fire Department come and test for gas presence.

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

a plumber is responsible for gas piping on the house side of the meter.
the gas company is responsible for piping (regulator) on the street side of the meter.
i would call the gas company first if you suspect the regulator.