Dean Smith criticised Brentford fans for turning on Neal Maupay during the defeat against Norwich.
Maupay, who was ill earlier this week, struggled before being taken off in the second half, with many of the home supporters showing their frustration with the forward.
That did not go down well with Bees boss Smith, who said: “The biggest disappointment was the (lack of) support Neal Maupay got.
“He was on his sick bed yesterday and gave it what he could. I felt the supporters could have been a lot more supportive of him.
“He’s a good young player and what he needed was a bit of support.”
Dean felt his team were unlucky to lose at Griffin Park, where James Maddison’s cracking strike gave the Canaries a 1-0 win.
He said: “I’m disappointed and a little bit frustrated – and probably feel a bit aggrieved. I think the best team got beat today.
“The difference was that their lad stuck in a 25-yarder. I feel Norwich will probably go away feeling a bit fortunate.”
Smith also revealed that Brentford striker Lasse Vibe missed the game because he is discussing a move to another club.