What is another word for "pestilential"?

Roget's Thesaurus (1911) lists these synonyms for "pestilential": azotic, catching, contagion, contagious, deadly, death, deleterious, epidemic, epizootic, indigestible, infectious, innutritious, insalubrious, insalubrity, killing, malaria, mephitic, morbific, narcotic, noisome, noxious, pestiferous, pestilent, plague, poison, poisonous, pot, septic, spot, taking, the, toxic, toxicity, venomous, virulent, zymotic.