So i was siting in diamond city and i dismissed curie to Boston airport where i have nothing settlement wise.
And i cant find her is says she is there but i have tryed everything like adding the bell and waiting like 3 days but she has not appeared.
Please help if you can. :^)

To be honest it sounds like you need to reload your game to an earlier save before your little mishap with Curie, and re do what ever you have done in the meantime.

Lol Thats the last place you want to send a companion. That place is huge, I sent Piper there a while back. I've been in and out of the Airport since for quests and such not actually looking for her, I never came across her yet.

There is no saves be for i dismissed her so im screwed i think.

Do you know where she might go in the airport?

I sent Curie to Sanctuary Hills or Red Rocket, can't remember exactly, but I found her in Vault 81. In front of the Clinic door.

Maybe you should look for her there.

Exactly as BlindGuardian say: Curie seems some kind of bugged to me. I thought i lost her and found her 4-5 days later in Vault 81 in front of the clinic, by accident. I took her back to sanctuary hills then and told her to stay in Sanctuary Hills. The moment the order was given, Curie went off, back to Vault 81, i guess...

If you are on PC, open up the console (~) and type:

player.moveto 00027686

or

player.moveto 00102249

I'm not sure which works, might depend on if you've done her personal quest or not

About 40 gameplay hours ago, I accidently told Curie to set up a supply route between Sanctuary and the Castle, and I've only seen her once since then. I found her out in the wasteland with a pack brahmin being attacked by raiders. I'm not too worried about it though, I normally have Piper watching my back. But now that I know she has a personal quest...