Rotten egg smell when boiler on

[jeahkg]

I have recently had an engineer come out to look at my boiler as it kept losing pressure at least once a month which I thought wasn't right. It turns out it had a water leak which is now fixed.

However I am still worried there is something else wrong with my boiler/system. I can smell rotten eggs whenever the boiler is on. This isnt coming from the actual boiler but seems to be coming from the nearest radiator to it. It doesn't smell when the boiler is off at all. I have read that it could be hydrogen sulphide but this seems to be more common when the radiator is bled which I haven't done? Could the smell have something to do with the water leak from before?

 

[footprints]

Has the room been decorated recently? It has been known for paints like Valspar and B&Q to give off a "cats pee" smell, when warmed up.

 

[Hugh Jaleak]

Corrosion is heating systems will produce Hydrogen, Hydrogen Sulfide is a different kettle of fish altogether, created by decomposing organic matter in the absence of oxygen, highly toxic and very unlikely to be coming from your radiators.

 

[Tricky-Dicky]

Could it be a heating pipe adjacent to a dead rat or mice, (beneath a floorboard) ?
We were warned about this when we had mice in our house (pest control bod warned us this, saying mice like the warm of the heating pipes).