Would the "good!" from With Me Tonight count? If so, I guess we could also count the "Hi" at the start of The Trader.
The "good" from With Me Tonight is spoken by Arnie/Arny Geller. (He also designed the stained glass that is the Wild Honey album cover.)
Here's a 1967 interview where Brian is asked about this "good".
https://www.youtube.com/watch?v=sRFE-24ucxc&t=101s
Even though Brian said that it just kinda worked and they left it in, it didn't work out as we hear on the record. If you listen to the sessions for With Me Tonight (these can be found on "Unsurpassed Masters Vol. 18 The Alternate Smiley Smile Album" and probably elsewhere), the "good" does not in fact line up on beat as on the album. It was a stray "good" that was spoken after a take that was later edited into place.
The "hi" at the beginning of Trader is Carl's son Jonah.