do you wear O2 (concentrator? or tank) a gal down at our local B&M that seems to be there every time we are, vapes just fine, I noticed she times it right after the spurts of air that come through the nasal cannula.
those Socialites don't put out much vapor, so it's probably hold it in your mouth (and if using the concentrator time it where it feels right with the "spurt"/puff.
maybe something that produces more vapor, mod and liquid VG is less irritating to some (I know at first it'll make you cough) and a high nicotine count/mg as your absorbtion is decreased with emphysema as the air's trapped in the air sacs, so you're going to be doing less inhales, with less efficacy. Sorry.
it's going to be better than smokes, but there are some ejuices that make me wheeze (COPD and told to stop smoking after damage from the flu that I'd be carrying around an O2 concentrator if not) and I'm breathing fine now, it was tough at first, push though it, anything is better for you than smoking...
keep trying, our local B&M is great, you can try each other's gear, and see what works for you, or get some live human help, if not maybe patches, but keep trying!! good luck!!