Used attributively before nouns (e.g., "sniffing equipment") to denote relation to the activity of sniffing.
Definitions
Relating to, intended for, or involving the action of sniffing. Engineers installed sniffing sensors along the pipeline to detect gas leaks.
sniffinggerund / present participle Used attributively before nouns to describe someone or something that is actively sniffing or able to detect scents, e.g., "a sniffing dog".
Definitions
Engaged in or characterized by the act of sniffing. The sniffing hound quickly located the hidden truffle.