1 Poison ivy, poison oak, and poison sumac are plants than can cause an itchy rash upon contact. 2  A substance called urushiol, found in these plants, causes the rash. 3  The rash is not contagious.  The rash usually disappears in one to three weeks.
Common factors that can cause clogged ears are wax buildup, air flow blockage to the Eustachian tubes, pressure differences in the middle ear, and cold and sinus problems. Clogged ears can affect people of all ages, but is most common among children, especially when they have colds.
To destroy any kind of bacterial infection that may be causing clogged ears, you can use a combination of alcohol and apple cider vinegar. 1  Mix equal amounts of alcohol and apple cider vinegar. 2  Lie down on your side and use a dropper to put a few drops of this mixture in the affected ear.