The two were involved in a number of altercations during Celta's surprise 2-1 win at the Santiago Bernabeu, before Ramos is claimed to have spat in the direction of Aspas – who scored the opener and set up Jonny Castro's winner.
The Celta attacker says he was unaware of what happened during the match, and sees no reason to call for punishment now.
"I did not even notice what happened," Aspas told Deportes Cuatro.
"I only saw it when someone sent me the video. I did not even know about it at first.
"Things like this happen a thousand times during a game, but these things stay on the field."