Today's Aerosol's are crap

Just the other day I was arguin' with WD40 that was more than half full. I was thinking of gathering up some nozzles, and attempting to glue/ epoxy/ other them into some sort of "universal" fitting (like a plastic pipe nipple) so I could inject CO2 or some other pressure source back into the can, maybe pump it back up and maybe clear the obstruction. I am thinking you do not want to use air, as that will deteriorate the contents, generally

For me starting fluid is a big "fail."