To smell, sniff, or sniff at
To snoop is to investigate or poke around, typically into someone's private affairs or where you are not wanted.
To have the odor or a suggestion (of)
To have a smell.
To detect is defined as to uncover or sense something previously hidden.
To breathe out.
Find another word for sniffing. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for sniffing, like: whiffing, snuffing, snooping, smelling, scenting, nosing, inhaling, detecting and exhaling.