A girls vaccination makes it more likely you get covid, not less, unless of course you ignore symptoms. IT is true that vaccinated people show symptoms more, and that a running nose, coughing person is more noninfectious than not. But the vaccine wideness the window of those who can give covid but show no symptoms by an unknown amount, hiding covid when before would be coughing in your face (and I presume you avoid them). A recent test is the only real safety measure. On a personally level if you have been double vaccinated your less likely to die if you get covid, but are also more likely to give it to others. Why this fact is being misrepresented at the political level I have no clue.
Note, this could change, as our knowledge of the vaccine is limited. It appears about 50% effective vs Delta but its too early to tell. 95% effective at full strength vs the first strain, less so after a few months. You still carry and get the virus, but its most of the time it does nothing and death becomes very unlikely 19 times out of 20.
The rest is wishful thinking. Someone else giving your the virus who is asymptotic is NOT affected by the vaccine one way or the other from present data (it may be effective with asymptotic as well, but this is unconfirmed.)
