"Emotions" is a song written by Ramsey Kearney and Mel Tillis which became a Top Ten hit for Brenda Lee in 1961.
Carl Smith did indeed record the song with the track serving as B-side to his #2 C&W hit "Why, Why".
[2] Lee recorded "Emotions" in an August 16, 1960 session at Bradley Film and Recording Studio in Nashville, Tennessee: the session - produced and arranged by Owen Bradley and featuring Floyd Cramer on piano - also produced Lee's #1 hit "I Want to Be Wanted" which was the precedent single to "Emotions".
A major hit in Australia (#20) and Flemish Belgium (#6), "Emotions" also afforded Lee a lower chart item in France (#56), Germany (#47), and the UK (#45).
An Emotions album by Brenda Lee - featuring both the title cut and "I'm Learning About Love" - was issued April 3, 1961.