"When it's an All Black and when it's in a public way where people are noticing it does tend to spill over into their brand image and then the wider brand image of the All Blacks and then the All Blacks is representing the New Zealand brand so that's the issue here."
Dr Smith said inappropriate actions by top level rugby players were beginning to create a "collective narrative" in the way they were perceived by the public.
"It starts to build up a story which probably isn't going to help the rugby brand, people start to remember things ... they build up a collective profile, so it's not just what the individual does within that team, it's collectively what we're remembering."
It also didn't help Smith's toilet rendezvous occurred so soon after the Chiefs stripper debacle, she said.
Although New Zealanders' morals were "a lot looser in today's society" the public still held the feet of sports icons and celebrities "against the fire a bit more perhaps than we do with ordinary life."
There was also the added complexity of inappropriateness of the incident occurring in a disabled toilet, she said.
She also expects the social media impact to be "huge" and now it was a case of NZ Rugby managing it in a way that was open, honest and apologetic and letting it blow up and not playing it down too much in a way that might annoy people.