modified
unhealthful, baneful, insalubrious, toxic, poisonous, contaminated, nauseous, destructive, harmful, deleterious, pernicious, unnutritious, noxious, septic, pestilent, contagious, dangerous, lethal, venomous, envenomed, narcotic, virulent, indigestible, tainted, inedible, germ-infested, disease-ridden, rotten, putrescent, putrid, unpalatable, spoiled.
Antonyms healthful*, wholesome, nutritious.