[Baumdiggity]

I believe I figured it out but my significant other does not agree.

My opinion: when you get a card with an "immediately" on it, like immediately roll a die, you do it. Right then and there. You discuss nothing because the card says immediately.
After that, you can choose to boost your Run away roll or use a card to cancel the curse.

He is still saying you could NOT discard Milk Suit after you roll the die because drawing the curse card itself signifies you already getting hit by the curse and it is too late to discard the Milk suit.

Me: discarding the milk suit can only happen if I fail the Run Away roll and have the Bad Stuff coming at me from the topmost Monster from the Door discards.