Has Emilia rubbed off on Des?

No. Emilia is not a faithful wife, she'd cuckold her husband in a heartbeat. On the other hand, Desdemona would never do such a thing. She talks about how great Othello is to her and she would never want to hurt him. She confirms that she had never done anything with Cassio. She has Emilia on her side, but the main person that needs to believe her, her own husband, now wants to kill her!!