Pestilential

1675, John Dryden, The Mistaken Husband, London: J. Magnes and R. Bentley, Act V, p. 63, What do you fear? Why do you shun me thus. […] I am not Pestilential, nor Leaprous.

[…] the Winter keen Pour’d out his Waste of Snows, and Summer shot His pestilential Heats:

The stench of the hold while we were on the coast was so intolerably loathsome, that it was dangerous to remain there for any time, and some of us had been permitted to stay on the deck for the fresh air; but now that the whole ship’s cargo were confined together, it became absolutely pestilential.

1941, J. Chapman Miske, “The Thing in the Moonlight” in H. P. Lovecraft, The Tomb and Other Tales, New York: Ballantine, 1970, p. 187, Casting my eyes about, I beheld no living object; but was sensible of a very peculiar stirring far below me, amongst the whispering rushes of the pestilential swamp I had lately quitted.

A long sicknesse will weary friends at last; but a pestilentiall sicknes auerts them from the beginning.

[…] the miseries of famine were succeeded and aggravated by the contagion of a pestilential disease.

pestilential fever; pestilential sweating

The Scab, the Stench, and the Burning are terrible pestilential Symptoms,

Now this pestilentiall Summer being well spent, upon the approach of the Winter, and decrease of the Sicknesse, the King […] drawes nearer to the City of London,

They must expect more Pestilential times, That lives in th’ Equinoctial of their Crimes;