I grab a cup coffee from a shop and it’s ruined because the barista is wearing cologne or perfume that inevitably has gotten on the cup and it’s all I can smell when I take a sip. I guess 2 things, this means 1 they haven’t thoroughly washed their hands, and 2 I can’t drink the coffee because it smells so bad and I have to throw it out. Not sure why, but I haven’t had this happen with any other type of food/drink, just coffee.
I don’t buy coffee much, but I also have a pretty sensitive sense of smell so I know what you mean when you say it ruins the coffee. Can you bring your own travel mug and pour the coffee into it? Since the barista isn’t touching the coffee itself the smell should go away entirely if you get rid of the cup.