how to deal with dogmatic people

Quick question. How do I deal with the kind of people who do not know THE first thing about a topic and they would pretend as if they are experts in it; and **impose** their opinions on the conversation while ignoring mine even when I am indeed an actual expert there. Eg: my father will assert things about physics (sometimes absurd and laughable), which is high school level at best. When I tell him calmly "the correct thing is actually not this because so and so... ", he refuse to believe/listen ( doesn't even inquire into it). This is even though I am a current PhD student, in physics no less. Similarly a cousin and some friends, not knowing a thing in that field try to be experts when I actually for a fact know those things. This kind of gets me mad and I become passive aggressive. What is a way to deal with these people and avoid bad karma simultaneously. In general we are supposed observe the feelings, but then physically, am I to always remain quiet? If I don't, there's no way I don't get subtly angry. Other option is to stop hanging out with people like that? But then isn't that coming from aversion - we are aiming for harmony and remaining undisturbed in the face of things rather than avoiding them? This is one of those things where I am quite unsure of the path. Please give insights and practical tips, other than 'just meditate more' - that I know. Any responses are appreciated, Thank you