Try what exactly?
The lady is chopping up onions and I think the idea of the goggles is to prevent a tearful experience. I weep like a faggot when I chop onions...
Toss a damp towel over your shoulders. Purple onion is not harsh, but eyeballs can be sensitive. The damp towel somehow grabs the fumes. Try it..
Remove the "shell" under the water and cut it in half under pouring water, too.The acid will be mostly neutralized.