Has anyone else heard the theory that putting vapor rub on your feet is just as effective as spreading it on your chest??

I’m trying to out tonight since I’m still battling a pretty bad cough, but since I am at the tail end of my cold I’m not sure… I feel a little better. I wonder if it has more to do with the surface area that the vapor rub is covering, more than the foot part of the whole thing. We’ll see how I feel in the morning.

What are your cough remedies for having more peaceful sleep??