When you are dealing with someone who is Passive Aggressive then you need to stop that person from behaving like this from you. Tolerating a passive aggressive person will only give him more chances of making situations worse. So it is always advisable to overcome this problem by analysing people with these traits and dealing with them.
Whenever you are dealing with a passive aggressive person, you will have numerous opportunities for falling into varied conflicts with him due to his numerous flaws. Conflicts and fights will only ruin you even more so it is better to just recognise the passive aggressive person and not give much attention to him.