So what causes the onion to act as a tear-gas bomb?
There is a compound called propanethial-S-oxide in the tissue of the onion, which is a type of sulfoxide. When the misty droplets encounter a wet surface (your eyes or nose membranes) it dissolves into a form of sulfuric acid, which is understandably irritating to your sensitive organs.
This does not work for me and I find it quite silly
This may not be completely inaffective. It seems to delay the process.
Did not work. It may reduce sensitivity to your nose.
This is just plain ridiculous!
Since the root end of the onion has a higher concentration of these chemicals.
Okay this is suggested by many, however chopping onions underwater seems very difficult to do with pieces floating away everywhere.
8.Contact lenses – conflicting arguments.
This is far too uncomfortable even though it works.
If you can get a small table fan in your kitchen to blow away the fumes it is helpful.
This is a popular suggestion but I dont find it to work.
This works for the most part . However not a pleasant smell and it may mess up your onions if used in frying as they tend to absorb moisture and also the flavour may spoil some dishes.
This rarely-known technique is based on the fact that the candle flame pulls air from around it and sends it up the smoke fume. This is surprisingly effective if you not using a huge amount of onions. I use this method the most on those sensitive days.