sniffing

the dog was sniffing the ground for any scent.

he admitted to sniffing glue as a teenager.

the customs agent noticed someone sniffing suspiciously.

she was sniffing back tears during the sad movie.

the security team was sniffing around for illegal activity.

the child was sniffing a flower with delight.

he was sniffing the air, trying to identify the smell.

the detective was sniffing out clues at the crime scene.

the horse was sniffing the other horses in the stable.

she was sniffing around for a good deal at the market.

the lab technicians were sniffing the samples for contaminants.