Whenever I eat raw onions (yum) I experience all the delicious symptoms of alcoholic hangover without any of the unpleasant drunkenness, am I weird? - I tried a Google search, but all of the hits relating to ‘raw onion hangover’ seemed to be recipes including raw onions which purport to cure hangovers.
I dunno, but take a look at this page
BTW, I did a Google search for “raw onion allergy”
Thanks Manduck that sounds like what I get (up until now I’ve never been allergic to anything.
I’ll probably keep on eating them though, it’s worth a little discomfort.
I had to laugh at the link on that page to ‘More Onion Testimonies’ (have you invited the power of onions into your life?)
As a matter of fact, I have 
Here’s another link