I had years of fun with that plant, which now lives in the public garden with no supplemental water. I had it relatively early on, did a lot of propagation from cuttings (easy but warning, there is a lag), experimented with different locations. In lots of sun the stem turns a sort of purplish or reddish chocolatey brown
But in my experience this color is not an indication of any problem, as long as the stems remain properly inflated. It's a stress color but not in a bad way. My plants were generally more brown than green, and the plant in the public garden is brown for most of the year.
The plant does grow fairly large by container succulent standards, filling a 12 inch pot to overflowing after a few years. It starts to have more of a trailing behavior so you can try putting it on top of a column or shelf where it can cascade and wander down in various directions. Get it to a bigger pot before you let it trail or you might not be able to do that later (without major surgery).
You may choose to restart your plant from cuttings every so often. Or you may choose to give it more space. That is a matter of personal preference. It tends to grow seasonally even here in our mild climate (summer-fall) and that seasonality tends to also be reflected in when cuttings start growing. Flowering here is typically in late summer or early fall, though it may occur at other random times too.
Hope this info helps now that you've gotten over the shock of the smell.
