Dump Airhead urine in galley sink?

[virginia boy]

I have an Airhead composting toilet which requires dumping the urine Container evry couple days or so. I want to come up with an easier way of disposing of the urine than carrying the urine up, out, and dumping overboard. Before the gnashing of teeth begins, let me say that I will NEVER regularly carry jugs of urine to a land toilet.

One solution I'm considering is to simply dump the urine down the galley sink (eliminated head sink) and flush with a little water. Sounds pretty disgusting I know, but whenever Leslie is not on the boat to protest it may be the perfect solution. You are all invited to breakfast on my boat by the way.

Does anyone with a composting toilet do this? Do odors develop over time? Am I too disgusting to live?

The other solution would be to plumb the urine to a holding tank and pump it overboard which seems to defeat the whole point of a composting toilet huh?
All suggestions for a solution to this problem welcome!