This was from Snopes during flu season a few years ago - Cut Onions
So I tried it on myself.
I used an onion on a fork standing up in a glass last
year when I thought I might be incubating flu - but the onion didn't go black....It occurred
to me that the idea of it drawing viruses and bacteria might not be
correct - I was aware of breathing in onion fumes - the lungs can be
used to absorb medication - as in asthma pumps, vaping and smoking so
I feel there might be something to it - we already know onions have
medicinal properties - and the best cough syrup in the world is onion
sliced into a teaspoon of brown sugar in a bottle - it makes 'juice' which
is an excellent cough syrup. Old wives used to put sliced onions into
bed socks whilst sleeping at night for colds and flu - the skin on the
feet absorbs the onion chemicals, whatever they might be.
I would like to see results of clinical trials about onions .......but you can't copyright onions! So no one's going to do that. But flu season is on it's way and I might try it again if I get it.
Excepting I'm expecting my vaping to do a good job protecting me too!