Maciej Szczesny, father of Arsenal goalkeeper Wojciech, has leapt to the defence of his son in the face of fresh criticism and described the Gunners' defence an "embarrassment".
The Arsenal number one was at fault for both goals as his side sank to a 2-0 defeat to Southampton on New Year's Day and was subsequently replaced by David Ospina in his side's FA Cup third round victory over Hull City on Sunday 4 January.
The goalkeeper's calamitous start to 2015 worsened following reports he has been fined £20,000 for smoking in the showers following the defeat at St Mary's.
But former 'keeper Szczesny Snr has hit back, insisting his son "isn't dumb enough" to have lit up in the changing room showers, although he admits he is yet to discuss the matter with him.
"I've spoken to people with whom he is in constant contact and are close to him. It is a situation invented by journalists," Szczesny Snr told Polish daily Przegladu Sportowego.
"There was no smoking in the shower, or argument with Mr Wenger, although the latter wouldn't surprise me.
"I do not believe he is dumb enough to smoke in the changing room."
Szczesny's erroneous performance against Southampton a week ago has raised questions whether he will reclaim his spot against Stoke City on Sunday 11 January or whether Colombia international Ospina will be between the sticks.
But the player's father insists Arsenal must do more to support their criticised goalkeeper, condemning the club's entire backline in the process, particularly Germany international Per Mertesacker.
He said: "Yes, he made a mistake on the first goal, but please look at the Arsenal defence. Per Mertesacker showed the agility of a rhinoceros. Someone should support him, but the coaching staff at Arsenal would rather not.
"The entire defence this season is an embarrassment."