It is our business what other people eat because poor eating habits lead to health problems which cause higher health care costs which everyone pays for. ...
This is why libertarians are opposed to safety nets and state welfare. It's not because we are stingy and don't want to help people in need. It's because these programs are inevitably used by fascists as an excuse to control people.
If you don't like that 'your tax dollars' are going to finance someone else's bad habits, then change that law that makes that happen. Don't use it as an excuse to micro-manage the lives of others.
Using your logic, there should be no seatbelts or seatbelt laws, no laws about using cell phones while driving, no restrictions on alcohol consumption before driving, no restrictions on drugs, no child labor laws, no fireworks laws, no laws of any kind involving personal safety. No warnings on cigarettes. No luggage checks when you fly. No laws requiring children to go to school. No, it would all be infringing on and micro managing the lives of others. At the same time you don't want to pay the taxes to support anything that has to pick up after people who cause mayhem in our society. You want one of those societies like Victorian England or France before the revolution where the majority lived in poverty, abuse, squalor and desperation, like animals, while the few at the top lived in luxury and indolence. Do you actually think in a society like that the likes of you would be at the top? The vast majority of all of us would be at the bottom, including you guys. Putting information labels on food isn't controling anyone; it is educating them. How on Earth do you go from putting information labels on food to fascism? Remarkable.