Hollywood superstar Jennifer Lawrence is a highly paid actress, Oscar winner, successful producer and…merry prankster. She's the latter, at least with co-star Liam Hemsworth: It seems Lawrence deliberately ate tuna fish, garlic or other malodorous foods right before their kissing scenes while filming The Hunger Games.

It was all in good fun, of course—and her punked co-star seemed to take it in good humor. In most situations, though, our mouth breath isn't something we take lightly. It can definitely be an unpleasant experience being on the receiving end of halitosis (bad breath). And when we're worried about our own breath, it can cause us to be timid and self-conscious around others.

So, here's what you can do if you're concerned about bad breath (unless you're trying to prank your co-star!).

Brush and floss daily. Bad breath often stems from leftover food particles that form a film on teeth called dental plaque. Add in bacteria, which thrive in plaque, and you have the makings for smelly breath. Thorough brushing and flossing can clear away plaque and the potential breath smell. You should also clean your dentures daily if you wear them to avoid similar breath issues.

Scrape your tongue. Some people can build up a bacterial coating on the back surface of the tongue. This coating may then emit volatile sulfur compounds (VSCs) that give breath that distinct rotten egg smell. You can remove this coating by brushing the tongue surface with your toothbrush or using a tongue scraper (we can show you how).

See your dentist. Some cases of chronic bad breath could be related to oral problems like tooth decay, gum disease or broken dental work. Treating these could help curb your bad breath, as can removing the third molars (wisdom teeth) that are prone to trapped food debris. It's also possible for bad breath to be a symptom of a systemic condition like diabetes that may require medical treatment.

Quit smoking. Tobacco can leave your breath smelly all on its own. But a smoking habit could also dry your mouth, creating the optimum conditions for bacteria to multiply. Besides increasing your disease risk, this can also contribute to chronic bad breath. Better breath is just one of the many benefits of quitting the habit.

We didn't mention mouthrinses, mints or other popular ways to freshen breath. While these can help out in a pinch, they may cover up the real causes of halitosis. Following the above suggestions, especially dental visits to uncover and treat dental problems, could solve your breath problem for good.

If you would like more information about ways to treat bad breath, please contact us or schedule an appointment. To learn more, read the Dear Doctor magazine article “Bad Breath: More Than Just Embarrassing.”

Exchanging passionate kisses with big-screen star Jennifer Lawrence might sound like a dream come true. But according to Liam Hemsworth, her Hunger Games co-star, it could also be a nightmare… because J.Law’s breath wasn’t always fresh. “Anytime I had to kiss Jennifer was pretty uncomfortable,” Hemsworth said on The Tonight Show.

Lawrence said the problem resulted from her inadvertently consuming tuna or garlic before the lip-locking scenes; fortunately, the two stars were able to share a laugh about it later. But for many people, bad breath is no joke. It can lead to embarrassment and social difficulties — and it occasionally signifies a more serious problem. So what causes bad breath, and what can you do about it?

In 9 out of 10 cases, bad breath originates in the mouth. (In rare situations, it results from a medical issue in another part of the body, such as liver disease or a lung infection.) The foul odors associated with bad breath can be temporarily masked with mouthwash or breath mints — but in order to really control it, we need to find out exactly what’s causing the problem, and address its source.

As Lawrence and Hemsworth found out, some foods and beverages can indeed cause a malodorous mouth. Onions, garlic, alcohol and coffee are deservedly blamed for this. Tobacco products are also big contributors to bad breath — which is one more reason to quit. But fasting isn’t the answer either: stop eating for long enough and another set of foul-smelling substances will be released. Your best bet is to stay well hydrated and snack on crisp, fresh foods like celery, apples or parsley.

And speaking of hydration (or the lack of it): Mouth dryness and reduced salivary flow during the nighttime hours is what causes “morning breath.” Certain health issues and some medications can also cause “dry mouth,” or xerostomia. Drinking plenty of water can encourage the production of healthy saliva — but if that’s not enough, tell us about it: We may recommend switching medications (if possible), chewing xylitol gum or using a saliva substitute.

Finally, maintaining excellent oral hygiene is a great way to avoid bad breath. The goal of oral hygiene is to control the harmful bacteria that live in your mouth. These microorganisms can cause gum disease, tooth decay, and bad breath — so keeping them in check is good for your overall oral health. Remember to brush twice and floss once daily, stay away from sugary foods and beverages, and visit the dental office regularly for checkups and professional cleanings.

So did J.Law apologize for the malodorous makeout session? Not exactly. “[For] Bradley Cooper, Christian Bale, yeah, I’ll brush my teeth,” she laughed.

Hemsworth jokingly agreed: “If I was kissing Christian Bale I probably would have brushed my teeth too. With you, it’s like, ‘Eh. Whatever.’”

If you would like more information about bad breath and oral hygiene, please contact us or schedule an appointment for a consultation. You can learn more by reading the Dear Doctor magazine article “Bad Breath: More than Just Embarrassing.”