Cut onions near the fan. Cold or low weather makes it more likely that the onions won’t sting. You can also cut onions in an open room to avoid the risk of burning your eyes from cutting onions.
Those are some tips for cutting onions so your eyes don’t hurt. If Friends of Fimela have other tips that are commonly used and are different from the tips above, there’s nothing wrong with sharing them with those of us here. Hopefully these tips are useful.