Try a scented potassium such as Zodiac Cense. A high quality potassium shock with some decent stink.

Bromine does not stop the issues you get with chlorine. Used chlorine gives you chloramines, used bromine gives you bromamines. They both stink and a non-chlorine shock such as potassium monopersulfate will solve the issue and the Cense product will give you the added smell of whatever you choose. There are 4 varieties but one is pretty bad and I'm not sure which one it is. I do know we sell a lot of the Red, blue and green so whatever the brown is really smells like brown.