My 2-cents probably won't "help" and, hopefully, I can phrase it so it won't get completely censored. In the early '70s ('71-'73), I worked in the "coke plant" in the steel mill in Lorain, OH. All day, EVERY day, regardless of season, you could SEE "glitters/twinkles" in the air that surrounded me. This, I came to learn, was "powdered coal" glinting in whatever light there was. I was friends with a co-worker there who had a friend I didn't know that worked at the "local" hospital as a "respiratory therapist (RT)." My friend from the mill went to see his "RT" friend 7-12 times per year for "therapy." The "therapy" he received, I eventually learned, was to inhale "a vapor," in a "tented" setup (like the "old" Vick's VapoRub commercials"), in order to expectorate the coal-dust and "whatever" (verboten to mention in this space) in an effort to "clear his lungs." The "magical vapor" at the hospital was almost "pure" propylene-glycol (aka, PG, and funny? how "spell-check" erroneously objects to those words). Anyway, long-story-short, my friend's RT told him that the mixture he was inhaling was DESIGNED to MAKE one cough-up any and all "irritants" he had in his lungs. My friend said he coughed, and coughed HARD (not gonna' mention the sputum he claimed to eject), for nearly an hour after each "treatment." So, maybe, the "extra" coughing you are experiencing is due to the PG in your juice interacting with "extra" mucous your lungs acquired due to your sinus infection.