Because my work involves interacting with people, I use Listerine mouth spray, especially after having coffee. Sometimes I catch myself giving myself a spray whether or not I really need it, perhaps 2-3 times an hour. Sometimes only a few sprays all day, sometimes more. I've used the spray for a couple of years. I've had a dry cough for five months. Sometimes it triggers my gag reflex. I can feel the cough coming on because there's a little tickle like a feather in the back of my throat. A few sips of water clears up the cough but only to return after another hour or so. The cough occurs at home as well off and on. A chest xray came out normal. Is the Listerine spray causing me to have a dry mouth/throat and causing me to cough? I'm 60, female, and healthy.