I have a natural gas range. The cooktop part seems to operate normally, with the flames blue. But recently, the oven has been emitting a smell that smells like those forced air portable propane heaters. Best way I can describe it. I know what unburned natural gas/mercaptan smells like, and it is not that. When I look in there, it seems the flame from the burner is orange instead of blue, but I'm not sure if that's how it's always been or if that is normal.
I recently had to replace the igniter in this oven. This started after that replacement, but not right away. Could it be that the new igniter is not letting the gas valve open fully? Or is there something else I should look at?
The oven is a Hotpoint Model RGBS100DMWW.
UPDATE: I have noticed this smell now when the cooktop burners are on without the oven - at first I thought it was just the oven. The flames there are definitively normal, all blue and the normal length they always are. But I can smell the propane heater / kerosene like smell from those burners. Is it possible there is something contaminating the natural gas supply?
UPDATE 2: Turns out my oven flame was not orange. What I could see through the oven part was the orange glow of the igniter. The flames are perfectly blue, as I found a way to see them better through the bottom drawer. I think the answer regarding oil-based paints was correct here, whenever there was still a whiff of the varnish in the air, the oven would produce this smell. Now it has cleared out, and the oven smells normal again.