As long as you dont object to people chewing with their mouths open, and instead put in ear-plugs or goto another room or something. It's a scientific fact that tastebuds are more effective in the presence of air, (half of the culinary arts is about getting more air into food)

If you complain about people chewing with their mouths open then you are attempting to objectively reduce their enjoyment of their meal because of your weird personal irrational ism.