Perhaps the best bet is to just grin and bear it. Directing the air outlets towards your face helps a bit.
Can always remember a few years ago pulling up alongside a Peach Air L1011 at LGW on the flight deck the cockpit was so full of bright blue smoke as the skipper was puffing away on a huge crooked pipe with this cloud of smoke billowing about I often have a chuckle when I think about it when having a senior moment often wonder who it was.
Back when that L1011 was new they still came with ashtrays on the fight deck.
