Subject: At what temperature do farts become visible ?

Note from the physics moderator to the biophysics moderator: leaving aside the 
somewhat droll subject matter, the issue is the water content of the escaping 
gas WRT to its condensation. I suspect the biophysics people may know that 
better than the "straight" physicists.



When walking outside, your breath condenses and is visible below a certain
temperature. What temperature should it be when farts become visible?

Re: At what temperature do farts become visible ?