The little puffing ego machine

The ego is like a little chugging engine sitting in the corner, emitting puffs of black smoke.

It can be de-installed; it's part of the deal.

If I keep it turned down, don't feed it fuel, and keep the windows open, it's unobtrusive.

If I close the windows, turn it up full whack, and crouch down to breath in the fumes it then churns out, I'm poisoned.