A thought.

Negative pressure ventilators (i.e. old style iron lungs) are simpler and might possibly be easier to produce as a stopgap solution.

Probably most of them that work at a computer all day, for these reasons:

1) Not enough natural light (cos you keep it dark to see your screen) = bodyclock broken

2) Not enough exercise

3) Too much stiumlation from the bright screen after dark

Computers ain't healthy