> Statistical testing of people claiming to be electrosensitive demonstrated conclusively that whilst they were not able to tell if a completely blank wifi access point was powered up or not, they did start getting strange headaches whenever the blinkenlights were on...
"Well controlled and conducted double-blind studies have shown that symptoms were not correlated with EMF exposure"
"several double-blind experiments have shown that people who report electromagnetic hypersensitivity are unable to detect the presence of electromagnetic fields and are as likely to report ill health following a sham exposure as they are following exposure to genuine electromagnetic fields"
"The researchers conclude that GSM mobile signal exposure had no effect upon well being"
TBF, there's a bit of hedging in each of the above articles, but it does seem fairly safe to say that EMF sensitivity is psychological rather than physiological...