If I leave the carby bikes with gas in the tank the garage stinks of fuel really badly. I have been siphoning the fuel out and then draining the carb bowls to resolve. I also don't want to leave gas in bike that may not be used for a while.

Has to be an easier way.

Was thinking of putting a quick disconnects on the fuel line and running it so that I can disconnect it and connect a tail piece into the disconnected line and run that into an external fuel tank (maybe a Tuff Jug :-). Then turn ignition on which will start fuel pump to empty the tank. Then reconnect and done.

These Motion Pro ones are shite, I bought two and they leak. Also not for FI engines, (I wanted one system regardless).
https://www.motionpro.com/product/12-0038

The Goodridge In-Line Fuel Quick Disconnect Coupling are expensive (that Amazon price is insane, can source for about AUD$60), but with Vitron seal they look good. Anyone else using them, or have alternatives, or alternative techniques to drain tanks at end of the track day.
https://www.amazon.com.au/Goodridge-.../dp/B007GM1CNY

Also found some 'expensiver looking products at Earls ...
https://www.earls.com.au/shop/earls-...-dry-break-17/