Never accept any gift/package/parcel from anyone while travelling. This particular person may not have any ulterior motive, but then again, you don't know them, you have not inspected the package, yet - you have it in your possession.

If you listen to any of the annoucements in any airline terminal anywhere in the world - you are told "do not accept any package from anyone"

don't be a dope or a dupe.

Signature line > "You can't fix stupid"