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Webster 1913 Edition

Adj.

[L.

nidorosus

steaming, reeking: cf. F.

nidoreux

. See

Resembling the smell or taste of roast meat, or of corrupt animal matter.

[R.]

Adj.

Resembling the smell or taste of roasted meat.

nidorous ‎(comparative more nidorous, superlative most nidorous)

(literary) Emitting a strong, unpleasant odor, especially one like that of cooking fat or similar greasy substances.
- 2002, Jamie O'Neill, chapter 10, in At Swim, Two Boys, ISBN 0743241878, page 240:
  That old man's niderous whispered breath had entered into MacMurrough's heart an insufflation of—of what, exactly?

Emitting the odor or taste of roasted meat, especially rotten meat