Norwich City boss Daniel Farke said his side failed to deal with QPR’s long-ball tactics in their 4-1 defeat at Loftus Road.
After Ryan Manning’s freak own goal, target man Smith laid on the equaliser for Massimo Luongo and later headed Rangers in front.
Smith then set Ebere Eze up to make it 3-1 before Manning scored at the right end when he netted with a late header.
Farke was frustrated, having made his team well aware of Smith’s aerial presence.
“Our whole preparation was nearly all about him,” Farke said.
“That’s their style – long ball – and then he wins the headers and you have to win the second ball.
“I have the feeling they didn’t create any chance out of the game but anyhow they played the long balls and we lost the duels.”
Norwich started well but switched off straight after going ahead, enabling Luongo to level shortly before half-time.
Farke added: “The first half was almost too easy. We deserved to be in the lead and then we forgot our basics.
“The first thing is always to be there and to win the determining duels and today we didn’t.
“It’s the first time in several months that I have seen this face of my team. I’m totally annoyed that we lost.
“It was possible, especially after we went into the lead, for us to drive home with the points. We must show a reaction, especially in terms of how we meet duels.
“When you go into the lead you have to be even more greedy and offensive to defend this lead.”