Speaking ahead of Saturday's URC meeting with Sharks, Smith acknowledged that the profile of his players has risen since winning the URC title in June.
Asked how keen he was for Tuipulotu to remain beyond the season, Smith replied: "I think it's [more] how much Sione wants to remain a Warrior. That's important.
"We love him as a player here and I believe that he's happy here. I hope that that is the important thing. I think for him to stay here with us will show how much he cares. I don't want to go into much now, especially not today on this tour and we're away from Scotland.
"But, yes, they [rival clubs] can make contact [with Tuipulotu] and there's probably more than one of our players that's been contacted.
"The value of the Glasgow Warriors players all went up. So we understand that. But for now, I think the focus should sit on what we want to achieve [against the Sharks] and next week."