According to Healthline even after brushing, there are various causes of foul breath, including health issues, specific diets, and other habits. Thankfully, many of these issues can be resolved, and you'll be able to breathe freely once more!

What You Consume

What you consume is often the cause of bad breath. When consuming odorous foods like onions or garlic, brushing and flossing can only help you get further. Scrubbing your teeth will only disguise the scent for a short period because these meals must pass through your body before the smell is totally gone. When you have terrible inhale on a regular basis and cleaning your teeth doesn't help, it's time to examine your diet to determine whether the things you eat on a regular basis are the culprit.

Gum disease

Bad breath can be a sign of a more serious oral condition, such as gum disease caused by plaque accumulation. Bacteria can grow and irritate the gums as a result of poor dental hygiene, resulting in terrible inhale. Gum disease, if left untreated, can create issues other than foul breath, such as problems with the gums and jawbone. Your dentist can advise you on how to improve your dental hygiene and treat gum disease.

Tobacco use (smoking or chewing)

Tobacco products are known to produce strong mouth odors. Smokers and chewers are more prone to develop gum disease, which is another cause of bad breath. While it may not be simple, breaking the habit is the most straightforward way to address the cause of this terrible inhale.