#1: Garlic

Garlic While it’s not surprising garlic would make the list, what might shock you is how garlic can leave its sulphuric mark on more than just your tongue. Garlic is also absorbed into your bloodstream, enabling a secondary wave of odor to make its way into your lungs, where it can freely escape through the mouth. Once absorbed, garlic then emits a bitter scent from your pores. None of this, however, should be a reason to swear off garlic completely. Just try not to overdo it and, when you’re finished, flush your mouth with garlic residue by brushing and flossing. Also, remember to rinse twice daily.

#2: Onions

Similar to garlic, the odour of onions lingers long after you’ve finished eating them. That’s because they both contain sulphuric compounds that get absorbed into your bloodstream and return when you least expect it. Give yourself an extra layer of protection by brushing, flossing, and rinsing.

#3: Dairy

Milk may do a body good, but it can dirty a mouth. That’s because naturally occurring germs from your tongue feed on the amino acids in milk and cheeses, resulting in an odour that is foul and unattractive.

#4: Coffee and Alcohol

Coffee and Alcohol initiate a drying effect, which reduces saliva flow. This allows bad germs to grow and causes bad breath, which is unattractive and lowers confidence

#5: Horseradish

When the one thing that gives a plant its distinctive flavour is also its natural defence against hungry animals, you know the by-product will linger after the plant has been digested. Such is the case with horseradish. The chemical compound isothiocyanate is what allows this common root vegetable to give cocktail sauces, dressings and breath a unique flavour and smell.