For Steve Miller a trip downtown is a living hell that makes him sick, dizzy and confused.
Bars make him feel the same and he can't use trains, airports or hotels without experiencing head-banging agony.
But Miller doesn't suffer from some strange phobia. He is allergic to Wi-Fi.
And unfortunately for him — and the other two percent of the population with electromagnetic hypersensitivity — the number of people pumping out the wireless internet signal is on the rise.
"I feel like an exile on my own planet," Miller said. "It's almost impossible to find somewhere without Wi-Fi nowadays. If I fancy a pint I have to travel three miles to the only pub in my area that doesn't have it."
Being extra-sensitive to this "electrosmog" has made moving around a nightmare for Miller, as stray signals from neighboring buildings could make him ill.
It has also cost the top British DJ thousands of dollars in lost income.
"I've missed out on loads of European DJ gigs as I can't find accommodation without Wi-Fi," he said. "Most hotels have it, as have all the airports. I can't even catch a train because they have it."
Miller now carries a Wi-Fi detector with him wherever he goes so he can avoid problem areas.