Pestiferous

because he hath vouchsafed to preserue our nation from such fountains, from serpents and venemous wormes, & from al other pestiferous & contagious creatures.

Source: wiktionary

In these solemn moments man discovers the germ of those vices, which like the Java tree shed a pestiferous vapour around--death is in the shade!

Source: wiktionary

and bears the body of our dear brother here departed to a hemmed-in churchyard, pestiferous and obscene, whence malignant diseases are communicated to the bodies of our dear brothers and sisters who have not departed...

Source: wiktionary

Wherever there is a vacant space the authorities have allowed refugees to put up pestiferous shacks, which now flank in unbroken lines the country roads leading into Rangoon, the railway tracks, and the shores of the Royal Lake.

Source: wiktionary