Never afraid to experiment on myself, here goes.....
I pulled out the bacon specimen. I used too much hickory smoke and it still tastes like bacon would taste in something else, not a good standalone bacon flavor (yet), but that's all irrelevant. It's not salty. At all. And that's a problem.
On a lark, I made a super saturated salt solution. Heated about 15ml of DW and dissolved as much salt as I could get it to take. Filtered out the remaining crystals and let it cool, then applied 6 drops to the 3ml specimen I was creating.
No salt detected in the flavor. Nothing. Zero.
I haven't broken down the coil to see what snowy white mess I suspect it's in from this, but disturbing is the lack of detectable saltiness. With the concentration I used, I expected something. Anything. Using more will affect the flowability of the e-juice itself, and without any detectable flavor, there is no indication that using more will do anything other than make a bigger mess. Apparently salt won't work for creating saltiness, an alternative will have to be found such as EM is a sub for sugar. It is sodium that tastes salty, perhaps a sodium alternative that will vaporize readily?
Time to hit Google....