I hate cutting onions coz' I always end up crying with eyes stinging. I remember when I was younger, I heard that if we stick some match sticks in our mouth (like smoking cigarette) while cutting, the onions won't make you cry. I tried that. Errr... sorry, didn't work.
I've also tried holding my breath as much as I can while cutting. I thought that breathing in the onion vapors is what makes you cry right. Wrong! It's the stuff that gets in your eyes and irritate it.
So, I just read somewhere that cutting onions near a fire source will stop the stinging eyes. Something to do with the fire burning up the vapors from the onions coz' it's highly flamable (don't quote me coz' I don't know if it's true). Anyway, this is what I did yesterday. Put a little candle on the table as I cut away.
A little bit of stinging eyes but no tears. Maybe I need a bigger candle :)
p.s. They say cutting under water or under running water will wash away the vapors when you cut. But I don't think that is practical. Well, not for me anyway.
p.s.s. This will make a great science lesson for children. Teach them "why onions make you cry?"