Long, Sorry.
Here's my Phlegm Story.
No doubt some here will deny this is possible.
Maybe it will give at least one other person, an idea of what to look for.
It got so bad I was unable to use pillows at night for 3 months. Felt the need to stretch out my neck as it felt swollen inside leaving it feeling constricted.
Been vaping almost 2 years. Use 50/50 but introduced one 70vg/30pg juice during this 3 month period and mistakenly thought i had a VG intolerance.
Only with the past 6-7 weeks of carefully testing, retesting and testing my equipment again, have I found the answer to Phlegm, at least for me.
Use many atomizers, sub-ohm, pre-ohm, rebuilt coils, 2 pre-made. Basically, no one particular pattern as a Vaper, other than mostly low wattage, 12w for a Nautilus Mini tank, sparingly used, or mainly, 18-30 at the highest or 40 watts for one Ni200 coil on TC.
3 months ago developed this phlegm and it kept getting worse. Never thought of vaping. Had tests for asthma, EMT, Thyroid, GERD and all cleared.
Reading a thread here one night I read of VG intolerance and at first it fit. Figured that was it.
As soon as it did, I stopped using all atomizers and 70/30 juice and only vaped on a Uwell Crown, Ni200 pre-made coil which relieved the symptoms immediately within 48 hours.
It felt as if the vape from the coil, instead of hitting one continuous spot at the back of my throat, was spread out. It allowed my throat to heal for the first time.
Over the past 6 weeks, I have narrowed it down to one atomizer. The Goliath v2.
The build in this particular atomizer, although sub ohm and potentially hot is the very same build I use in the Bellus atomizer, yet, the former was hitting one spot over and over and the Bellus, like the Uwell Crown Ni200 coil seemed to be spread out, not hitting that same spot over and over.
Both atomizers are built with dual coil, 2mm at 0.5 and both vaped at 18-30watts.
At its worst, even vaping on my rarely used Nautilus Mini with Aspire 1.18 coils, the Phlegm was not relieved, UNTIL i removed the Goliath v2 out of the equation fully.
Once I had and it cleared up, I once again vaped on it and the Phlegm reappeared, quite quickly. Removed it, it all cleared up. Tried this 4x just to be sure I wasn’t insane.
Removed the Goliath, it healed and I introduced again, 100% the Bellus with the exact same build and wattage and it's never happened again since.
I can only assume that while my throat was inflamed, even the Nautilus was aggravating it and I never got a chance to heal. Now I am healed, the Nautilus is fine, as are all my other atomizers
The Bellus, with the exact same sub ohm build has a vape that is just more spread out and even a bit cooler than I found the Goliath v2 to be.
Those with this phlegm issue might want to take a look at their own atomizers, perhaps see if there is a sub ohm build in there, doing to them what the Goliath was doing to my throat and/or eliminate one by one until you see if this is the cause for any of you as well.