Meeting with family / long sorry

So I have a 10 month old and we have been staying inside and not seeing people. My fiance has gone to see his mom, dad, sister, niece and nephew to help them out. He assures me he's safe . I don't really feel comfortable with a lot of people (even if family or friends) to be around my son. But they keep trying to convince my fiance to bring my son over . When I was almost convinced I told my father in law(who wants to see him more than anyone) that maybe but I wouldn't want anyone holding or kissing him. He then told me that it's not how you contract the virus. It kinda hurts my feelings because I respect their views on covid and it seems like they don't agree with mine or respect it because they keep trying to convince my fiance to bring him over. And my son is easily influenced by his family. Even if we agree on something, they tell him something and he tries to convince me or argue with me. Should I just give in or what should I do?