Frequencies can affect people.
Some are music.
some are visible
Some are infrared and make you feel warm Or give you a nice tan.
Some are microwave frequencies and cook food and can burn you.
I don’t doubt that a small percentage of people can be affected by crtain frequencies that most people are not bothered by.
We recognize people with sever problems with exposure to light, some people can taste colors, some people can taste words - brain wiring does this - so it is not incredible that certain frequencies could bother a smal number of highly sensitive people. I believe it can hapoen. Lok at how long cel phone makers enied a link to brain cancer in heavy cell users.