Firstly, according to studies, It is unlikely to contact COVID from completely recovered patients since the patient is no longer able to transmit the virus.
Secondly, vaccinated individuals cannot spread the virus, unless they are infected directly by the virus through the airway.
Health Tips
Anyway, it is always better to protect yourself by wearing a mask and practising social distancing.
Identify and isolate yourself when you feel sick or think you have covid symptoms.
Get medical attention at earliest.