If I smell food that I cannot eat, but has a pleasant sent... I like to think about how "burning fat in the Temple smells pleasing to The Lord" - I think this concept is painted out in Leviticus.
Although I am sure G-d would not want any pork items sacrificed to him, it's just I imagine burnt fat of any type, kosher or not, would smell similar. - Heck, I am not even sure if it's bacon/pork/ham I smell my neighbors cooking, verily, it may be 100% kosher food.