Particularly when it's outright denied such as:
"I don't look pissed off" when the other person clearly has a very grumpy expression and is sulking.
I have tried pointing out the passive aggression and saying things like "could you please lose the tone from your voice. I am trying to have a discussion with you but your tone is upsetting the children"
The response is met with even more passive aggression such as:
"You just can't let anyone be pissed off can you? Perfect Ican, you're always perfect aren't you? Yep, it's obviously just me, the problem's all me." (obviously said sarcastically, angrily and usually followed by stomping out of the room.
Any genuine advice on how to deal with this would be greatly appreciated as it's a recurring issue for us.