You probably would by the smell. but again, what are you doing at McDonalds anyway?
Full Disclosure: I like McD’s burgers and fries a few times a month. Their basic menu still has a most unique taste and smell. I recall the first time I smelled a McD’s bag of food, back in the early 60’s. I was mystified. I was fascinated. I was (suddenly) hungry! It was for my Dad though. We kids were NOT allowed to beg or even hint at begging from other people.