https://flashbak.com/the-therapeutic-vibrator-wonderful-images-from-high-frequency-electric-currents-in-medicine-and-dentistry-1918-41823/
https://flashbak.com/the-therapeutic-vibrator-wonderful-images-from-high-frequency-electric-currents-in-medicine-and-dentistry-1918-41823/
deleted by creator
I guess ozone has a physiological effect on the mucous membranes maybe also on the pathogens. Well at higher concentration it is definitely caustic and not to recommend.