I have had a terribly distressing cough for close to 7 years. Been to all the doctors, had tons of tests, tried loads of things. Finally, went to a chiropractor who got my organs back in position and got me using Young Living Therapeutic Grade Essential Oils. I am on month 3 of pretty much daily use and am clearing out the most gruesome stuff from lungs, Eustachian tubes, nose, and throat. I feel like hell, but seeing what is exiting my body is more than worth it. Exiting practically every orifice - and I understand that is par for the course.
There are many anti-fungal, anti-bacterial, anti-viral oils, but they must be free of solvents and distilled correctly to avoid adding more contaminants to your system and also to ensure that they work properly. More expensive but that's my decision.
I'm using diffusers, baths, and rubs, plus ingesting some - you can only do this with absolutely pure therapeutic grade oils - dangerous otherwise.
I'm using cloves, rosemary, oregano, lemon, lavender, wintergreen, peppermint, ravensara, eucalyptus, myrrh, hyssop, myrtle, frankinscense, cinnamon bark, among others.
As the yeast die, they release toxins, viruses, and bacteria, and so I am using oils that address all three, plus supporting the liver, kidneys,etc.