Smoking and Chewing Tobacco. Smoking and chewing tobacco are notoriously bad for your sense of taste. It causes your brain to get used to higher levels of fat and salt, which can alter your pleasure sensations at the actual flavor of food. Many people even complain about burning mouth -- I had it for quite some time. It is also worth noting that the Listerine mouthwash is using around 21 to 26 percent of alcohol concentration in their product. The active ingredient in the Crest product that will kill the bacteria and germs is the CPC (cetylpyridinium chloride). "[Listerine] mouthwash has not been tested against the coronavirus and is not intended to prevent or treat COVID-19," the company wrote. posted by logovisual to Health & Fitness (14 answers total) 6 users marked this as a favorite . I put a pinch of salt directly on my tongue, and it tastes just like sugar! Listerine has alcohol a good percentage and other chemical materials which numb the taste buds. What the heck did that mouthwash do to my taste buds, and is there anything I can do to undo it quickly? It doesn’t literally affect your taste buds, but it does affect the way your brain processes tastes. I like my gums and teeth, but I'd rather be a beer-drinking denture wearer than to lose my sense of taste. My dentist didn't know of any research on the effect of Listerine on taste perception, but does anyone have any good reason to think that it might cause damaged to tastebud/palate sensitivity? This is very different compared to Listerine that relies to the alcohol to kill these germs.