Good evening just joined the forum. After a gap of 20 odd years I've got back into brewing beer kits and I must say how much better they are now. I've done a couple of Bulldog kits in a tall thin fv as opposed to a bucket and they have both given off a really sulphurous smell . Anyone able to advise., cheers in advance. First one is in a barrel second one has just started fermentation, has something gone wrong? Cleaned, sanitised thoroughly