The most common smell I notice in the new IBM's we unbox around here is
probably the smell of little bits of styrofoam from the packaging being heated
up and melting in the power supply and on the CPU heatsinks. I suppose that
you could open the thing up and blow it out before you ever power it up!
I suppose you could hang up one of those evergreen car deoderizers back behind
the computer where the fan output comes out!
Probably a high level of overall ventilation will cure this faster than anything. Try
running fans across the work surface to mix more room air through what you might
be breathing. I've hung onto several little high speed fans harvested from old mainframe
boxes (these are 110AC units) for the purpose of blowing solvents and solder smoke
out of my shop area at home. I guess you could also buy some of those extension cables
to take yourself further from the CPU!