This is one of those home remedies that actually works quite well. While it might not be in vogue to do so, it's always wise to pay attention to those old home remedies. They are often effective and usually less damaging than treating conditions with batches of chemicals. The side effects are usually less, too.
Of course, some home remedies are complete nonsense. A great example of that is the thing Granny from the "Beverly Hillbillies" prescribed for everything -- moonshine. A snoot full of corn squeezings might make you forget you're sick for awhile, but I suspect the healing effectiveness of it is very limited.