Do you cover it up at all? Do you chew gum? Mouth spray? Polos/Tic tacs?
Or do you leave it and just wait till someone offers you/wait till you get home and ignore it.
Polos (IMO) don't work. They're a candy, not a breathe mint. Same goes for tic tacs.
I chew Airwaves, mainly 'cause it clears...