Huffing 100% oregano
No, do not put that in a nebulizer. You get a small pot with about 1/4 inch of water to barely simmering. Put a couple of drops in the water. Put your face over the pot and slooooowwwwwlllllyyyy inhale. You WILL cough at first, but with practice you’ll learn to breath it deeply into your bronchial tubes. Try alternating between your nose and mouth.
Make sure to wash the pot with soap when done or the next thing you cook will have oregano flavor.
Never inhale anything oil-based.