Johnson alleged Podence, who scored Wolves' equaliser, had spat at him in the 90th minute of the match. The incident was checked by VAR at the time and no action was taken against him but the Portuguese player was charged on Wednesday.
"As I have been accused of something I haven't done... I will make it clear: I did not spit on Nottingham's player," Podence said on Instagram on Thursday. "I'm telling the truth and I would never do such a thing, even more to a colleague."
Podence is facing a six-match suspension if found guilty.