Showing somewhat more mettle than Everton's Alex Nyarko at the weekend - who famously asked to be substituted after a fan offered to swap shirts with him and hasn't been heard of since - Kaba insists the boo boys have not got to him.
Even Lee Chapman recovered from the indignity of being subbed by a fan once, although it must be said it was a pre-season friendly and there were no subs left.
So a few jeers from the chicken run and elsewhere certainly wasn't going to deflect Kaba's concentration.
He says: "I can't control that; I think the fans were disappointed too because the team are not playing well at the moment.
"I hear it but I don't care; at Marseille the crowd was especially awful like that, but I don't have a choice. When you have to come on you have to concentrate and focus on the football.
"If they support you it is alright but if they don't, they are the same fans and you have to try to play well. I think now they know me and they saw that when I came on that was the start of trouble for Leeds United.
"I think I played well and now they can see that I can do some good things on the pitch. I could have been angry; but I think when I play I play well, like Leeds and Southampton away and even against Middlesbrough at home and Aston Villa - that's football.
"I don't know why they acted like that, but I think I needed a great game at home for people to be OK with me but now I don't care; I think I did OK.
"What is important for me is the manager and the rest of the players telling me I'm playing well - which they did."
Kaba is still searching for that first goal at West Ham, though a header and bicycle kick brought about two of the best saves of the match, and he says: "That's football, but Nigel Martyn made some great stops.
"I tried the overhead kick one time in Marseille and it went just wide, but this time the keeper made a spectacular save."
Will he be hoping to be involved in the last home game of the season?
"I don't care," he says. "If he uses me he uses me, and if not I'll keep working hard and waiting for my chance."
He wouldn't be drawn on whether or not he would be playing in a West Ham shirt - and a new look one at that - next season, saying:
"I don't know yet, maybe we will have to discuss it, but at the moment we will wait and see what happens later.
"Maybe later I will talk to Harry. I feel unlucky but I have to wait for another chance because I like English football."
Kaba, of course, swapped the first division for the top flight when Olympique Marseille allowed him to switch his loan from Blackburn to Upton Park earlier in the season.
He does not envisage West Ham swapping places with the Blackburn and says: "We have some quality players at West Ham and we won't go down, though we need three points.
"We can get those points to stay in the Premier League next week; we have a big game in Manchester and with two games left it could be easy for us."