Okay,then have a seat with wife and tell her. Make the conversation about respect for living with another person. That m being separated doesn't exclude you from courtesy and respect. Not in those words, because they are harsh and preachy, but that is what the convo should be about.
If you want to see a different behaviour, then you have to ask.
By the way, she is smelling the coffee, just not the brand you want her to.
