I would choose taste...its the one that is least likely to impact your survival chances....sure you'd lose some the pleasure of eating some things...but the sence of smell can also warn you of dangers (like gas leakes etc...) whereas taste is only for pleasure....i'm sure I wouldn't enjoy it, but yes i'd vote for taste.

Stay safe all.

Perfection does not exist. The question therefore, is: what level of imperfection are we willing to settle for?