An email from Kelsey Grammer's account was fired off this week with ... "Camille smells like beef jerkey [sic]" in the subject line -- but Kelsey claims he had nothing to do with the mystery message.
The email went out to Kelsey's friends and contacts Wednesday morning ... according to the New York Post.
Kelsey -- who's still waging a child custody war with Camille Grammer -- quickly sent a follow-up email explaining the odoriferous email came from an old shared account, and "third parties" continue to have access to it.
Kelsey cryptically said of the unnamed person, "May I suggest that it is 'they' who owe you an apology."
We would've gone with, "S/He who detected it, ejected it" ... but whatever.