Every time I chop onions I am plagued by tears, sniffling and it feels like razor blades on my retinas. I've tried all the so-called remedies: closing my mouth, using a wet knife, freezing the onion first, making French onion soup with celery instead - no success.
I stumbled across this tip yesterday and it totally works. 100% satisfaction guaranteed - unless you're allergic to gluten, as I was reminded tonight.
Put a piece of bread in your mouth while cutting onions. It's weird, but it completely prevented any stinging or crying. I'm not sure about the specfics of size or type, but I just used regular white bread.
Amazing. You're welcome.