I’m not sure whether I understood your question properly but most of the smart fields are not “noded”. So when a user plays one of them, the other owners of the field are not affected automatically.
However, as said by others in this thread and elsewhere: whenever someone uses such fields, there’s a body of knowledge that is collected and added to the field’s database. That can then benefit other people with similar issues.
Edit with example:
You, Joe, and I have the same X smart field. When I play X, this doesn’t affect Joe and you at that moment.
But the work the field has done on me, the analysis that it has conducted on me, etc. are stored in its memory. So when you and/or Joe play the field, you can be helped in the same or similar way. The field is sort of saying “ah yes, I remember this stuff from Bronyraur. I can adapt it to Kaworu and Joe in a way that is specifically tailored for them though”.
Also adding this one to the list, at least in the way explained by the description and Maoshan: