I've found that the most important thing you can do is brush your tongue and the roof of your mouth vigorously. Before you go out, brush your teeth and scrub the hell out of your tongue. If there's a whitish coating on your tongue it means there's food and bacteria on your tongue and your breath will be rank as the night progresses. Scrub till your tongue is a bright pink. Scrub far enough back that you almost feel your gag reflex. Mouthwash is not enough. And don't forget the roof of your mouth that your dirty tongue rests on. This is of course assuming the bad breath is coming from your mouth and not your lungs(if you're a smoker).
Another tip, and this might sound kinda gross but you can lick the back of your hand(in privacy of course) and then smell it. If it has no smell, you're cool. If it does, that's what your breath smells like.
Another tip, and this might sound kinda gross but you can lick the back of your hand(in privacy of course) and then smell it. If it has no smell, you're cool. If it does, that's what your breath smells like.