I have the exact same symptoms for a couple of wks now but I've been taking Symbicort for quite awhile at this point. I read you can get yeast infection in the vocal cords so I may ask my Dr. for antifungal meds cos I cant wait for an ENT exam. Also read on this site the connection between Vit D and K2 deficiency and asthma...doesn't apply to me cos mine is from mold in a house years ago but still might try and see if my asthma improves. I am Celiac and gluten causes the same symptoms but it says this inhaler is gluten free and it only started acting up so that option is out. I use Ventolin on occasion but using that for many many years. For me I will see if can switch inhalers to a brand that doesn't affect vocal cords as much, Advair is NOT one of them, plus will try the supplements. Do not suck on menthol lozenges cos menthol dries out cords more...sleeping elevated and sucking on ice chips gets the swelling down...at night this can really help especially. I can't continue like this so will get on everything this coming week.  

Did a little more research just now and found out that even though the max methane should not exceed 10. It is normal to be around 3 and not rise. Again, I was at 13 so this does make me a bit suspicious. This was done back in May of 2024. I do recall being put on 14 day Antibiotic called Rifaximin but I'm really not sure if it made a difference, but if it did, then the problems still came back:( 

I did a SIBO Test about a year ago, and I barely elevated on the Methane portion (max was 10 and I hit 13). Dr wasn't too concerned.    

Have you looked into SIBO (Small Intestine Bacterial Overgrowth)?  Also, MCAS (Mast Cell Activation Syndrome)/histamine intolerance (they go together like a hand and glove).  Both of the above are common in the celiac community.

So tough for me when my symptoms are asymptomatic. Only excessive gas, floating stools and occasional discomfort in my lower right abdomen. These symptoms do not change, regardless of how I eat too:(  I'm sure that next week the GI doctor will discuss my findings and pathology results with me. It's at that time I may push for an MRI or CT scan of the abdomen. I prefer the MRI to avoid unnecessary radiation too.