The following words have been used:
Transpire, gasp, earthquake, Eclipse, frequent, Pharynx, sore throat, Uvula, Bless you, achoo, broke, spasm, cough, choke, lump, spit, speech, speak, stuck, talk, a, itch, epiglottis, snore, tongue, sneeze, nervous, salivate, tonsil, aa, fail, fall, yawn, escape, awe, aah, embarrassed, amazed, nauseated, facepalm, voice, sore, groan, trachea, breathing, ill, illness, nasal, anoy, apathy, antagonize, play, ambivalence, headache, nice, narnia, laught, LOL, drama, trauma, asdams apple, frequent, frequency, reverberation, nerve, nirvana, guilt, haha, phlegm, heartbreaking, sad, mad, dark, happy, lazy, word, agitated and pain.