Lets start with hands that smell like onions. You can rub your hands with a little lemon juice to get rid of the onion smell.
If your going to be cooking with yout onions place them in the freezer for about thirty minutes before you chop them and they won't burn your eyes.
Sweet onions will always work better in cooking than regular onions.
Have you ever had French Onion Soup? If not you should make some real soon.
Many people who say they are allergic to onions really aren't. They just don't like onions. Onions are really good for you. You can use fine chopped green onions to garnish dishes with and people will love it.