Unfortunately this is a common problem with new anything if you have sensitivities. My computer (MacBook) wasn't too bad. Sometimes it is the internal components that are the problem. I find that DVD players are really bad when they are running.
If I were you, I would take it outside as you have been but let it run instead of just sitting when not in use. You'd have to be able to keep an eye on it of course so no one walks off with it!! This way the innards can gas off too without stinking up your home and making you sick(er).
@Suchi, btw my MacBook is a white plastic one but I don't think they make them now. They are all aluminum body now. I don't know if you want to try a mac but if you might, take a look at their website. They seem to be more environmentally (and sensitive people) friendly than most. There is a learning curve going from a PC to a mac but if I can get the hang of it anyone can.
