What is another word for "pestiferous"?

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