I switched 6+yrs ago & haven't had the first case of bronchitis (or rather chronic bronchitis b/c I had that rather than regular but it was exacerbated by 4 autoimmune diseases) since.
September of this year, I switched to a Kanger Subox Mini; however, I still don't do lung hits, which might explain why I don't get any of the crud in my lungs or whatever; however, I have never - as a smoker or a vaper - never been immune to the run-of-the-mill upper respiratory infection since this is generally bacterial in nature and contagious. I know it's going around the schools where I live and when I go out each time, I am putting myself at risk from others who may have it or be carrying it...
Just because I haven't had chronic bronchitis or the need for antibiotics for the infections the bronchitis used to cause doesn't mean I haven't needed antibiotics. I have had to take them for the upper respiratory infections along with the Sudafed you now have to sign for & are limited to X number of boxes at a time along with showing ID in order to buy even 1 box. Also, I am allergic to tree pollen and since it's still relatively warm where I live, people are still mowing their lawns and the last of the leaves are falling along with the tree pollen floating everywhere so I have had to contend with allergies on top of 2 upper respiratory infections.
Since my immune system is for all intents & purposes broken, I see my doctor early if needed or when any new symptoms begin. The upper respiratory infections I have had over the years do occasionally cause a cough but it's a dry cough from the post-nasal drip, hence the Sudafed taken with the upper respiratory infections & the allergies. DEFINITELY SEE YOUR DOCTOR! If you have kids at home, that's even bigger reason to see your doctor because kids bring all kinds of bugs home from school. Even those with the strongest of immune systems can't fight them all without a bit of help, esp if it's bacterial in nature and it's been going on for more than a week or so, even without fever... (I can't tell the difference between a fever and the high temps I tend to run as a result of Lupus (SLE), which is the overall hardest autoimmune disease on my system as a whole but if it runs for more than a few days to a week along with other symptoms, I'm in the doctor's office).
So please go see a doctor or stop by a walk-in Quick-Med if you can't get an appointment soon enough. Vaping helps, don't get me wrong. All my specialists are PRO Vaping; however, ignoring any warning signs of a problem you may be having is just not sensible. This is another little gem my specialists remind me of when I come in for the standard every X days or X months for checkup on various parts of the systems within the body as a whole.