I work in a shop that does a lot of work on old carburetor cars and I completely agree. I think some are WAY to rich.
I use ozium or lysol spray.Keep the windows cracked a 1/4 inch does more good to keep odors down than anything. Cat converters in the earliest years would stink like sulphur frequently and would puke a polecat
A lot of folks don't know this so I'm going to mention it, one of the components of exhaust fumes is nitrogen oxide, often abbreviated NOx. Properly functioning cat goes a long way to cut way down on NOx, and rich smelling exhaust has a lot of it. NOx is really good a destroying lung tissue, so please don't over due it when your enjoying your exhaust.
As an alternative try ozium new car smell, it's pretty close and is available in a spray can or a small can that you open and place under your seat. At the shop we use large doses of it in a spray can.