To inhale in order to detect the scent of (something).
To detect the scent of; to discern by the sense of smell.
To have a suspicion of; to detect the possibility of (something).
To impart an odour to, to cause to have a particular smell.
To hunt animals by means of the sense of smell.
A smell left by an animal that may be used for tracing.
Any trail or trace that can be followed to find something or someone, such as the paper left behind in a paperchase.
A substance (usually liquid) created to provide a pleasant smell.
A distinctive smell.
The sense of smell.
To use a snorkel.
A snorkel parka.
A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.