So while there is a risk associated with resting your nuts directly on certain very high power radio transmitters, the noise and nausea are something different. Without getting pedantic, electricity and magnesium basically cause each other and sometimes it lines up with resonant frequencies in a device and cause it to physically vibrate in an audible way. This is why electronic devices with no moving parts can hum. This leads into how some sound can mess with people, sometimes even when they can’t hear it (infra sounds from data centers and such). I have experienced this too, most memorably when I went to a restaurant with my then girlfriend and her family. One of the tvs was whistling really loudly but at a pitch so high nobody else could hear it. She and I could clearly hear dog whistles and she was practically crying by the time we convinced her dad to go to a different place. I felt like there was an ice pick getting screwed into my head. People associate the device with the discomfort and don’t recognize the actual mechanism behind it.

Even if it's "just" placebo, that doesn't mean it's not real. Placebo effects are very real.