It's extremely rare to get it in your mouth. Trichomonas is a parasite with flagella... like little flappy arms that move the parasite and irritate your skin. You don't necessarily feel it, though. Some people do and some don't. Not a lot is known about an infection of the mouth. Mucus could build up a little in your mouth, or it could smell "off" from normal. Think of an infection in your mouth when you think of symptoms.
If you think you have it, take something like Listerine that has alcohol in it and swish very well all through your mouth. Do this a few times a day to try to flush the infection out.
Search for questions
Still looking for answers? Try searching for what you seek or ask your own question.