If you happen to have a large amount of butter to work with, put on some non-latex gloves because skin oils will add a cheesey smell and flavor from the oils in your skin. Summer is right about the 'puke' odor from not rinsing.
The left over buttermilk is REAL buttermilk. You can also use it in biscuits, cakes, pancakes...It's not like the clabbered, sour stuff from the store. However, that cultured suff from the store is the same culture used to make cheddar cheese. I'll let you take it from there :)
As an American you have the right to not believe in guns. You also have the right to not believe in God. But if someone is trying to break into your home, or wants to harm you, the first thing you will do is pick up the phone and call someone with a gun. The second thing you will do is pray that they get there in time. ~Don Moore