Here are some tips to help you at home:
Drink enough liquid. Insufficient drinking leads to a decrease in the amount of saliva, which causes increased reproduction of bacteria that produce volatile substances that stink;
Chew on mint leaves or fennel seeds;
Regular oral hygiene after eating;
Dissolve in the mouth tablets septogal, imudon, hydroperit;
Use special sprays to freshen your breath;
From folk remedies, to remove a bad smell, you can also rinse your mouth with decoctions of wormwood, sage, chamomile, St. John's wort, sorrel;
You can drink herbal tea;
You can chew coffee beans;
Eat several apples on an empty stomach.