Have itchy clogged ears and was trying to clear them by taking a deep breath and holding my nose then trying to force air out my nose. It didn't work, made me dizzy and ears ring. Couldn't get rid of it and googled, found an article on how doing that thing can kill you and regularly kills people if they're on the loo, it should only be done in A&E etc cos it changes your heart rythym? Is that true? I am presuming as this was 25 mins ago I am OK, but still worried?