Smoke in Cockpit
Phalanger. Don't know what your background is, but your statement that inflight the pressure should push the smoke away from the cockpit is pretty "Broad-Brush". Depending on the source of the smoke and how it is entering the cockpit it may not always be possible to evacuate the smoke from the cockpit area immediately. Until the source can be isolated and removed the smoke will continue. Once this is accomplished the "Smoke Evacuation Procedure" would follow.