Indeed. I have used Humega and it does smell like rottent eggs. I believe it smells like that because it has sulfur in it(great product) but I haven't particularly used fish ferts quite yet although I know they smell a lot. A general guide line is the brew shouldn't smell bad, but it definitely depends on the starting ingredients.
I would say it's more like the brew shouldn't smell too different from the original ingredients. For instance a basic compost tea might consist of Earth Worm Castings, Humus, and molasses(obviously other ingredients can be added but that's not my point). The EWC, Humus, and molasses mixed up in aerating water should smell fresh and earthy right when you mix them in. 24 hours later the tea should smell just as earthy and fresh. If it smells putrid, rancid, nasty, etc It is probably full of anaerobic bacteria/fungi because the dissolved oxygen content of the water wasn't high enough to support aerobic life.
Since you added Humega, and Fish ferts judging by smell is pretty much out. The fact that your PH is rising is a good sign though because anaerobic bacteria/fungi like acidic environments, so a PH that is rising is usually a sign of an increase in aerobic bacteria. If you worried about the tea going bad, then you might want to add an extra pump and air stone for good measure.
