Some one came to house and i didn't weared mask and they sat inside our house and ate food and driked tea can we be infected by them from corona or something. they were 1m far but they sat and ate food so i am frightened please say answer today ?

First: Will be to see if they were potentially sick, either tested or not. If they were proven sick with a test, monitor yourself for symptoms such as fever, cough or sore throat and test and quarantine as well as transmission is possible in above circumstances. If not sick by recent test or symptoms, no worries. Best to coordinate would be your doc.

COVID 19 concerns: If the person was infected with COVID 19 than of course, transmission is possible. Monitor for sx's. Wash hands (or use sanitizer) often for at least 20 seconds. Wash hands before touching eyes, nose or mouth. Use a cloth cover over mouth & nose when around others. Stay home as much as possible. Avoid sick people. Distance at least 6 feet from others. Clean/ disinfect frequently used surfaces.