I know one way to find out. Sniff this.
The Big Bang Theory Season 9, Episode 18
We mustn't let her SNIFF out any trouble.
Game of Thrones Season 5, Episode 4
And I watched you SNIFF Joe's
hair when he wasn't looking.
The Big Bang Theory Season 12, Episode 16
if instead of talking we could
just SNIFF each other's butts?"
The Big Bang Theory Season 7, Episode 12
See? It's right here after
"providing a confirmation SNIFF
The Big Bang Theory Season 5, Episode 15