Thanks for your replies all. I suspected it must be food I am eating but can't pinpoint it at the moment. I was hoping there would be an easy answer like 'oh, rotten egg farts, that must be the brussels sprouts you have eaten'. Alas, no clear reason and detective work on my part to sort it out. I guess it might be the motivation to get off this sugar craving train I seem to be on these days

As for not worry about it, ordinarily I wouldn't if it was just the smell. It is just that the smell has coincided with some definite gurgle guts in poor DD and she really seems to be uncomfortable until she manages to have a motion, which are not coming as easily as normal.

At least DH is off the hook though