Hello, I have pretty sensitive sinuses and allergies to dust etc. Over a week ago, I was painting a wall for a few hours interior room and ever since I have a feeling of blockage and a lump in the back of my throat, top of neck. I am worried that I have caused damage due to fumes and am looking for ways to get rid of it or what it could be. My sinuses have been playing up the past months with yellow, red mucus in the morning, don t know if this is connected.